1

                                                               EXHIBIT 10(C)(1)6

                             STOCK OPTION AGREEMENT


                                 by and between

                                TSX CORPORATION

                                      and

                                 TCI TSX, INC.


              Granting Preemptive Rights Stock Options on Account
                 of Employee Stock Options Granted Pursuant to
                    Long-term Incentive Compensation Program


                          Dated as of October 6, 1995




   2
                                                               EXHIBIT 10(C)(1)6

                               TABLE OF CONTENTS


                                                                                                                  
1.       Grant of Option  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.       Exercise of Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         2.1 Method of Exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         2.2 Payment of Exercise Price  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         2.3 Fair Market Value  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.       Non-Transferability  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4.       Representations, Warranties and Covenants of the Company . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         4.1 Organization, Good Standing, Authority and Approval  . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         4.2 Authorization of Shares of Option Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         4.3 Company's Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5.       Representations, Warranties and Covenants of Optionee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         5.1 Organization, Good Standing, Authority and Approval  . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         5.2 Acquisition for Own Account  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

6.       Conditions to Issuance of Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

7.       Transfer Restrictions; Legend on Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

8.       Registration Rights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

9.       Adjustments Upon Changes in Capitalization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6

10.      The Optionee's Rights as Shareholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

11.      Applicability of Section 16(b) of the 1934 Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

12.      General  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         12.1 Entire Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         12.2 Waiver  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         12.3 Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         12.4 Specific Performance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
         12.5 Survival of Representations and Warranties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
         12.6 Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
         12.7 Certain Rules of Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
         12.8 Benefits of Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
         12.9 Attorneys' Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
         12.10 Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9




   3
                                                               EXHIBIT 10(C)(1)6

                             STOCK OPTION AGREEMENT

              GRANTING PREEMPTIVE RIGHTS STOCK OPTIONS ON ACCOUNT
                 OF EMPLOYEE STOCK OPTIONS GRANTED PURSUANT TO
                    LONG-TERM INCENTIVE COMPENSATION PROGRAM

         STOCK OPTION AGREEMENT (this "Agreement") dated as of September 1,
1995, by and between TSX Corporation, a Nevada corporation with its principal
office at 4849 North Mesa, Suite 200, El Paso, Texas 79912 (the "Company") and
TCI TSX, Inc., a Colorado corporation with its principal office at Terrace
Tower II, 5619 DTC Parkway, Englewood, Colorado 80111-3000 (the "Optionee").

                             PRELIMINARY STATEMENT

         (A)     The Optionee is an affiliate of TCI Communications, Inc.
(formerly known as TeleCommunications, Inc.), a Delaware corporation ("TCIC").

         (B)     The Company and TCIC are parties to an Investment Agreement
dated as of March 14, 1994 (the "Investment Agreement") pursuant to which TCIC
purchased 2,109,000 shares of TSX Common Stock, par value $.01 per share (the
"Common Stock"). Contemporaneously therewith, the Company and TCIC entered into
a Registration Rights Agreement dated as of March 14, 1994 (the "Registration
Rights Agreement") affording TCIC certain registration rights with respect to
such shares and any additional shares of Common Stock held by TCIC from time to
time during the term thereof.

         (C)     TCIC transferred and assigned its rights and obligations under
the Investment Agreement and the Registration Rights Agreement to Optionee.

         (D)     Section 4.04 of the Investment Agreement granted certain
preemptive rights to TCIC with respect to the issuance by the Company of, among
other things, any Additional Common Shares (as defined in the Investment
Agreement) or options to subscribe for or to purchase Additional Common Shares.

         (E)     The Company granted stock options to qualified employees under
the terms of the Company's Long Term Incentive Plan ("LTIP") on March 13, 1995,
and March 30, 1995, aggregating to 24,000 shares, and on May 22, 1995, for
47,000 shares, at prices set forth in Exhibit A and Exhibit B, included herein.
In accordance with Section 4.04 of the Investment Agreement, by virtue of the
grant of such options by the Company, TCIC is entitled to preemptive right to
purchase options with the terms set forth below:

   4
                                                               EXHIBIT 10(C)(1)6


                                                                   
                                   Per Share                       
           Number of Shares        Exercise                        
          Subject to Option         Price           Expiration Date
          -----------------         -----           ---------------
                                                           
               14,220               $17.25            Mar 12, 2005  
                6,399               $16.13            Jan 23, 2005  
               33,473               $17.58            May 21, 2005  



         (E)     Upon receipt by TCIC from the Company of notice, pursuant to
Section 4.04 of the Investment Agreement, of the grant of the aforesaid
employee stock options, TCIC by letter dated August 24, 1995, notified the
Company of its intention to acquire options in accordance with its preemptive
rights under Section 4.04 of the Investment Agreement and instructed the
Company to issue such options to the Optionee. Accordingly, the parties have
entered into this Agreement for the purpose of granting to the Optionee the
options to purchase Common Stock in accordance with such preemptive rights.

                                   AGREEMENT

         NOW, THEREFORE, in consideration of the premises and covenants herein
contained, the parties hereby agree as follows:

         1.      GRANT OF OPTION.

         The Company hereby grants to Optionee, on the terms herein provided,
the options (the "Options") to purchase:

                 a)       Fourteen thousand two hundred twenty shares (14,220)
of Common Stock at an exercise price, per share of $17.25, with an Option term
such that the Option shall be exercisable by the Optionee in whole or in part,
AT ANY TIME OR TIMES, for a period commencing on the date hereof and expiring
at the close of business March 12, 2005, and for

                 b)       Six thousand three hundred ninety-nine (6,399) shares
of Common Stock at an option price per share of $16.13, with an Option term
such that the Option shall be exercisable by the Optionee in whole or in part,
AT ANY TIME OR TIMES, for a period commencing on the date hereof and expiring
at the close of business January 23, 2005, and for

                 c)       Thirty-three thousand four hundred seventy-three 
(33,473) shares of Common Stock at an option price per share of $17.58, with 
an Option term such that the Option shall be exercisable by the Optionee in 
whole or in part, AT ANY TIME OR TIMES, for a period commencing on the date 
hereof and expiring at the close of business May 21, 2005.

                                       2



   5
                                                               EXHIBIT 10(C)(1)6

         The shares of Common Stock issuable upon exercise of the Options are
referred to herein as "Option Stock." The purchase price of the shares of
Option Stock referred to above in each case is referred to as the "Exercise
Price".

         2.      EXERCISE OF OPTION.

                 2.1      METHOD OF EXERCISE.

         The Options shall be exercisable, in whole or in part, by written
notice to the Company stating the number of shares of Common Stock to be
purchased and accompanied by full payment of the Exercise Price for the shares
of Common Stock issuable upon such exercise.

                 2.2      PAYMENT OF EXERCISE PRICE.

         The Exercise Price for the shares of Common Stock issuable upon
exercise of the Option shall be paid (i) in cash, by uncertified check,
certified check or bank draft, or (ii) by the surrender, in whole or in part,
of issued and outstanding shares of Common Stock of the Company (not including
the shares of Common Stock issuable upon exercise of the Option), which shall
be credited against the Exercise Price at the Fair Market Value (as defined
below) of the shares surrendered on the date of the written notice of exercise
of the Option.

                 2. 3     FAIR MARKET VALUE.

         For purposes of this Agreement, "Fair Market Value" of the Common
Stock shall be the closing sale price of a share of Common Stock as published
by the national securities exchange on which the shares are traded on the
applicable date (provided, that if the shares of Common Stock are traded on
more than one national securities exchange, Fair Market Value shall be the
closing sale price on the applicable date published by the exchange selected by
the Company). If the exchange is closed for trading on such date, or if the
Common Stock does not trade on such date, then Fair Market Value shall be the
closing sale price on the date the Common Stock last traded on such exchange
prior to the applicable date.

         3.      NON-TRANSFERABILITY.

         The Option granted hereby may not be transferred by the Optionee other
than to a corporation, partnership or other entity controlling, controlled by
or under common control with TCIC (collectively, the "TCIC Affiliates").

         4.      REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE COMPANY.

         The Company represents and warrants to and agrees with Optionee as
follows:


                                      3

   6


                                                               EXHIBIT 10(C)(1)6

                 4.1      ORGANIZATION, GOOD STANDING, AUTHORITY AND APPROVAL.

         The Company is duly organized as a corporation and is validly existing
and in good standing under the laws of Nevada. The Company has the corporate
power and authority to execute and deliver this Agreement. The execution and
delivery of this Agreement by the Company and the consummation of the
transactions contemplated by this Agreement (including the issuance of the
shares of Option Stock) have been duly authorized and approved by all necessary
corporate action of the Company, and this Agreement is a valid and binding
obligation of the Company, enforceable in accordance with its terms. This
Agreement and its execution and delivery by the Company do not, and the
consummation of the transaction contemplated by this Agreement and the issuance
of the shares of Option Stock will not, constitute a violation of or a default
(whether with notice or the lapse of time or both) under the Articles of
Incorporation or Bylaws of the Company, any law to which the Company is
subject, any provision of any agreement, instrument, order, judgment or decree
to which the Company is a party or to which the Company or any of its assets is
subject, or any rule of, or any provision of the Company's Listing Agreement
with, the American Stock Exchange.

                 4.2      AUTHORIZATION OF SHARES OF OPTION STOCK.

         Upon delivery of stock certificates by the Company and receipt by the
Company of the full amount of the Exercise Price therefor, the shares of Option
Stock, when issued and delivered in accordance with the provisions of this
Agreement, will be duly authorized, validly issued, fully paid and
nonassessable outstanding shares of Common Stock of the Company.

                 4.3      COMPANY'S OBLIGATIONS.

         The Company shall (1) at all times during the term of the Option
reserve and keep available such number of shares of Common Stock as will be 
sufficient to satisfy the requirements of this Agreement, (2) pay all original
issue and transfer taxes with respect to the issue and transfer to the 
Optionee of shares of Option Stock pursuant to the Option and all other fees 
and expenses necessarily incurred by the Company in connection therewith, and 
(3) from time to time use its best efforts to comply with all laws and 
regulations which shall be applicable thereto.

         5.      REPRESENTATIONS, WARRANTIES AND COVENANTS OF OPTIONEE.

         Optionee represents and warrants to and agrees with the Company as
follows:

                 5.1      ORGANIZATION, GOOD STANDING, AUTHORITY AND APPROVAL.

         Optionee is duly organized as a corporation and is validly existing
and in good standing under the laws of Delaware. Optionee has the corporate
power and authority to execute and deliver this Agreement. The execution and
delivery of this Agreement by Optionee and the consummation of the transactions
contemplated by this Agreement have been duly authorized and

                                       4



   7
                                                               EXHIBIT 10(C)(1)6

approved by all necessary corporate action of Optionee, and this Agreement is a
valid and binding obligation of Optionee.

                 5.2      ACQUISITION FOR OWN ACCOUNT.

         The shares of Option Stock to be issued and delivered to the Optionee
pursuant to this Option (unless such shares have first been registered under
the Securities Act of 1933, as amended (the "1933 Act")) shall be acquired by
the Optionee for investment for the Optionee's own account and not with a view
to, or for, sale or other distribution thereof, and that the Optionee has no
present intention to sell or otherwise distribute any shares of Option Stock to
be issued or delivered to the Optionee pursuant to this Option, except in a
manner which will not violate the provisions of any applicable federal or state
securities laws, rules or regulations.

         6.      CONDITIONS TO ISSUANCE OF SHARES.

         If at the time of exercise of an Option, there does not exist either
(a) an effective registration statement under the 1933 Act, with respect to the
shares of Option Stock subject to the Option, (b) an opinion of counsel,
satisfactory to the Company, to the effect that such registration is not
required under one or more of the exemptions provided under the 1933 Act, or
(c) a "no action" letter, with respect to the proposed issuance of such shares,
issued by the staff of the Securities and Exchange Commission and delivered to
the Company, then such shares of Option Stock may only be issued with an
appropriate restrictive legend in accordance with Section 8 hereof.

         7.      TRANSFER RESTRICTIONS; LEGEND ON CERTIFICATE.

         The Optionee acknowledges that the Option Stock must be held
indefinitely unless subsequently registered under the 1933 Act and the
securities laws of every jurisdiction applicable to such resale or unless
exemptions from such registration requirements are available. The Company will
be entitled to place conspicuously upon each certificate representing shares of
Option Stock a legend as required by Article 15 of the Articles of
Incorporation of the Company and a legend substantially in the following form:

         THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
         UNITED STATES FEDERAL OR STATE SECURITIES LAWS AND MAY NOT BE OFFERED
         FOR SALE, SOLD OR OTHERWISE TRANSFERRED OR ASSIGNED FOR VALUE,
         DIRECTLY OR INDIRECTLY, NOR MAY THE SECURITIES BE TRANSFERRED ON THE
         BOOKS OF THE CORPORATION, WITHOUT REGISTRATION OF SUCH SECURITIES
         UNDER ALL APPLICABLE UNITED STATES FEDERAL OR STATE SECURITIES LAWS OR
         COMPLIANCE WITH AN APPLICABLE EXEMPTION THEREFROM, SUCH COMPLIANCE, AT
         THE OPTION OF THE CORPORATION, TO BE EVIDENCED BY AN OPINION OF THE

                                       5

   8

                                                               EXHIBIT 10(C)(1)6


         HOLDER'S COUNSEL, IN FORM REASONABLY ACCEPTABLE TO THE CORPORATION,
         THAT NO VIOLATION OF SUCH REGISTRATION PROVISIONS WOULD RESULT FROM
         ANY PROPOSED TRANSFER OR ASSIGNMENT.

         Notwithstanding the foregoing, the Optionee may transfer the shares of
Option Stock to any TCIC Affiliate.

         8.      REGISTRATION RIGHTS.

         The provisions of the Registration Rights Agreement shall be
applicable to the shares of the Option Stock, and the Optionee shall be
entitled to exercise all of the rights granted to TCIC under the Registration
Rights Agreement with respect to the shares of Option Stock.

         9.      ADJUSTMENTS UPON CHANGES IN CAPITALIZATION.

         The Exercise Price and the number or kind of shares subject to the
Option are subject to adjustment in case the Company should at any time issue
additional shares of its Common Stock as a stock dividend, or in case the
shares of its Common Stock should at any time be subdivided into a greater
number of shares, or in case the outstanding shares of its Common Stock should
be combined by reclassification or otherwise into a lesser number of shares, or
in case the Company shall merge consolidate with or into another corporation or
entity, or another corporation or entity merges into the Company, or in the
case of any sale or transfer of all or substantially all of the assets of the
Company, or in the case of a capital reorganization or recapitalization not
involving a merger, consolidation or sale or transfer of all or substantially
all of the assets of the Company. The adjustment will entitle the Optionee to
receive, for the same aggregate Exercise Price, in lieu of securities
receivable upon the exercise of any part of the Option prior to any such
dividend, subdivision, reclassification, combination, sale; transfer or
reorganization, the securities to which the Optionee would have been entitled
if the Optionee had exercised any part of the Option immediately prior to the
record date or effective date of the stock dividend, subdivision,
reclassification, combination, sale, transfer or reorganization. Neither the
issuance of stock for consideration, the issuance of stock on the exercise of
stock rights, options or warrants, nor the issuance of stock on the conversion
of a debenture or of a share of capital stock shall be considered a change in
the Company's capital structure.

         No fractional shares of Option Stock shall be issued upon any exercise
of the Option following an adjustment made pursuant to this Section 10, and the
aggregate Exercise Price paid shall be appropriately adjusted on account of any
fractional share not issued upon such an exercise.

         10.     THE OPTIONEE'S RIGHTS AS SHAREHOLDER.

         The Optionee shall have no rights as a shareholder with respect to any
shares of Option



                                       6

   9


                                                               EXHIBIT 10(C)(1)6



Stock until the date of the exercise of the Option and the issuance of the
shares of Option Stock and then only to the extent that there has been issued
one or more certificates for such shares of Option Stock to said Optionee upon
the due exercise in whole or in part of the Option. No adjustment shall be made
for dividends (ordinary or extraordinary, whether in cash, securities or other
property) or distributions or other rights for which the record date precedes
the date such stock certificates are issued.

         11.     APPLICABILITY OF SECTION 16(B) OF THE 1934 ACT.

         The grant of the Option may, under Section 16 of the 1934 Act, be
considered a "purchase" of an equity security subject to the "short-swing"
profit rules of Section 16(b). The Optionee is urged to consult its legal
advisor regarding the applicability of Section 16 to its transactions in equity
securities of the Company, including the granting to the Optionee of the
Option. In this connection, the Optionee agrees not to sell, during the six
month period immediately following the date of this Agreement, any shares of
Option stock which may be acquired during such period upon exercise of the
Option.

         12.     GENERAL.

                 12.1 ENTIRE AGREEMENT.

         This Agreement, subject to the matters described in the Preliminary
Statement, contains all of the agreements and understandings between the
parties hereto, and no oral agreements or written correspondence shall be held
to affect the provisions hereof.

                 12.2 WAIVER.

         No waiver by any party hereto of any breach of any covenant, condition
or agreement hereof on the part of the parties hereto to be kept and performed
shall be considered to constitute a waiver of any other covenant, condition or
provision, or of any subsequent breach thereof.

                 12.3 NOTICES.

         Any notice, demand, request, waiver or other communication under this
Agreement must be in writing and will be deemed to have been duly given (i) on
the date of delivery if delivered to the address of the party specified below
(including delivery by courier), (ii) on the fifth day after mailing if mailed
to the party to whom notice is to be given to the address specified below, by
first class mail, certified or registered, return receipt requested, postage
prepaid, or (iii) on the date of transmission if sent by facsimile transmission
to the facsimile number given below and if telephonic confirmation of receipt
is obtained promptly after completion of transmission, as follows:

                                       7

   10
                                                               EXHIBIT 10(C)(1)6



If to Optionee:                            TCI TSX, Inc.
                                           c/o Tele-Communications, Inc.  
                                           5619 DTC Parkway 
                                           Englewood, Colorado 80111 
                                           Attn: David D. Boileau

                                           Facsimile: (303) 488-3225


With a copy similarly addressed:           Attn: Legal Department



If to the Company:                         TSX Corporation
                                           4849 N. Mesa, Suite 200
                                           El Paso, Texas 79912
                                           Attn: Harold C. Tamburro

                                           Facsimile: (915) 543-4821

With a copy to:                            Kemp, Smith, Duncan & Hammond, P.C.
                                           2000 State National Plaza 
                                           El Paso, Texas 79901-1441
                                           Attn: Tad R. Smith

                                           Facsimile: (915) 546-5360


Either party may from time to time change its address or facsimile number for
the purpose of notices to that party by a similar notice specifying a new
address or facsimile number, but no such change will be deemed to have been
given until it is actually received by the party sought to be charged with its
contents.

                 12.4 SPECIFIC PERFORMANCE.

         The parties acknowledge that there will be no adequate remedy at law
for a violation by the Company of its obligations set forth in this Agreement
and its obligations to issue and sell the shares of Option Stock pursuant to
this Agreement and that, in addition to any other remedies which may be
available to Optionee for a violation of those obligations, those obligations
will be specifically enforceable by Optionee in accordance with their terms.

                                       8

   11


                                                               EXHIBIT 10(C)(1)6

                 12.5 SURVIVAL OF REPRESENTATIONS AND WARRANTIES.

         All representations and warranties set forth in this Agreement will
survive the Closing.

                 12.6 AMENDMENTS.

         This Agreement may not be amended, modified, waived, discharged or
terminated orally, but only by an instrument in writing signed by the party
against which enforcement thereof is sought.

                 12.7 CERTAIN RULES OF CONSTRUCTION.

         This Agreement shall be construed in accordance with, and shall be
governed by, the laws of the State of Texas.  In the event any court of
competent jurisdiction shall declare any portion of this Agreement to be
invalid, the remainder of this Agreement shall not be invalidated thereby, but
shall remain in full force and effect. The captions in this Agreement are for
reference purposes only and will not in any way affect the meaning or
interpretations of the text of this Agreement. Where the context requires,
words in the singular shall be deemed to include the plural and vice versa.

                 12.8 BENEFITS OF AGREEMENT.

         Subject to the provisions of Section 4, this Agreement will be binding
upon and will inure to the benefit of the parties and their respective
successors and assigns. Neither this Agreement nor any of the right or
obligations of a party hereunder may be assigned without the consent of the
other party, provided that the Optionee may assign its rights and delegate its
obligations to any TCIC Affiliate.

                 12.9 ATTORNEYS' FEES.

         In the event of any action or suit based upon or arising out of any
alleged breach by any party of any representation, warranty, covenant or
agreement contained in this Agreement, the prevailing party will be entitled to
recover reasonable attorneys' fees and other costs of such action or suit from
the other party.

                 12.10 COUNTERPARTS.

         This Agreement may be executed in one or more counterparts, each of
which will be deemed an original.

                                       9

   12

                                                               EXHIBIT 10(C)(1)6

         IN WITNESS WHEREOF, the Company and the Optionee have executed this
Agreement.

                                        TSX CORPORATION


                                        By: /s/ HAROLD C. TAMBURRO
                                            ----------------------------------
                                            Harold C. Tamburro, Vice President
                                            and Chief Financial Officer

                                        TCI TSX, Inc.

                                        By: /s/ DAVID D. BOILEAU
                                            ----------------------------------
                                            David D. Boileau
                                            Vice President Finance and Treasurer


                                       10