UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2013 Check here if Amendment [ ]; Amendment Number: This Amendment (Check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: DSC Advisors, L.P. Address: 900 North Michigan Avenue Suite 1900 Chicago, Illinois 60611 13F File Number: 028-11157 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Andrew Bluhm Title: Manager of the General Partner Phone: 312.915.2485 Signature, Place, and Date of Signing: /s/ Andrew Bluhm Chicago, Illinois/USA May 15, 2013 Report Type (Check only one.): [ X] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 50 Form 13F Information Table Value Total: $144,399 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional managers with respect to which this report is filed, other than the manager filing this report. NONE FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- AMERISOURCEBERGEN CORP COM 03073E105 4116 80000 SH SOLE 80000 APPLE INC COM 037833100 3231 7300 SH SOLE 7300 ARCH COAL INC COM 039380100 69 12710 SH SOLE 12710 BARCLAYS BK PLC IPATH S&P500 VIX 06740C188 1014 50000 SH SOLE 50000 BAXTER INTL INC COM 071813109 55 25000 SH PUT SOLE 25000 BLUCORA INC COM 095229100 3382 218444 SH SOLE 218444 CAPITALSOURCE INC COM 14055X102 19139 1989536 SH SOLE 1989536 CHICAGO BRIDGE & IRON CO N V N Y REGISTRY SH 167250109 4200 67628 SH SOLE 67628 CHINA XINIYA FASHION LTD SPONSORED ADR 16950W105 508 385000 SH SOLE 385000 CVS CAREMARK CORPORATION COM 126650100 17597 320000 SH SOLE 320000 DARA BIOSCIENCES INC COM NEW 23703P205 250 250000 SH SOLE 250000 DELPHI AUTOMOTIVE PLC SHS G27823106 3552 80000 SH SOLE 80000 DURECT CORP COM 266605104 266 200000 SH SOLE 200000 EARTHLINK INC COM 270321102 62 11440 SH SOLE 11440 EMULEX CORP COM NEW 292475209 67 10300 SH SOLE 10300 FACTSET RESH SYS INC COM 303075105 1 20000 SH CALL SOLE 20000 FISERV INC COM 337738108 5296 60296 SH SOLE 60296 GAMESTOP CORP NEW CL A 36467W109 4 25000 SH PUT SOLE 25000 GENERAL DYNAMICS CORP COM 369550108 60 50000 SH PUT SOLE 50000 GLOBECOMM SYSTEMS INC COM 37956X103 1321 110000 SH SOLE 110000 HALOZYME THERAPEUTICS INC COM 40637H109 70 12190 SH SOLE 12190 HARRIS CORP DEL COM 413875105 2994 63980 SH SOLE 63980 ISHARES TR MSCI EMERG MKT 464287234 2310 54000 SH SOLE 54000 ISHARES TR MSCI EMERG MKT 464287234 144 400000 SH PUT SOLE 400000 ISHARES TR IBOXX INV CPBD 464287242 1199 10000 SH SOLE 10000 ISHARES TR RUSSELL 2000 464287655 222 600000 SH PUT SOLE 600000 LEAP WIRELESS INTL INC COM NEW 521863308 73 12420 SH SOLE 12420 MCKESSON CORP COM 58155Q103 7449 69000 SH SOLE 69000 MERCK & CO INC NEW COM 58933Y105 2831 64000 SH SOLE 64000 MONSTER WORLDWIDE INC COM 611742107 66 12980 SH SOLE 12980 MUELLER WTR PRODS INC COM SER A 624758108 70 11830 SH SOLE 11830 NAVIDEA BIOPHARMACEUTICALS I COM 63937X103 569 210000 SH SOLE 210000 PACIFIC DRILLING SA LUXEMBOU REG SHS L7257P106 1212 120000 SH SOLE 120000 PPL CORP COM 69351T106 6262 200000 SH SOLE 200000 PROCTER & GAMBLE CO COM 742718109 10 25000 SH PUT SOLE 25000 RIGEL PHARMACEUTICALS INC COM NEW 766559603 851 125400 SH SOLE 125400 ROADRUNNER TRNSN SVCS HLDG I COM 76973Q105 17515 761531 SH SOLE 761531 SELECT SECTOR SPDR TR SBI INT-FINL 81369Y605 19 100000 SH PUT SOLE 100000 SPDR S&P 500 ETF TR TR UNIT 78462F103 2255 550000 SH PUT SOLE 550000 SPDR SERIES TRUST S&P RETAIL ETF 78464A714 11 100000 SH PUT SOLE 100000 STEC INC COM 784774101 1406 318200 SH SOLE 318200 TARGET CORP COM 87612E106 7530 110000 SH SOLE 110000 UNION PAC CORP COM 907818108 11393 80000 SH SOLE 80000 UNITED RENTALS INC COM 911363109 1374 24440 SH SOLE 24440 UNITED RENTALS INC COM 911363109 190 50000 SH CALL SOLE 50000 UNIVERSAL AMERN CORP NEW COM 91338E101 117 14010 SH SOLE 14010 VALASSIS COMMUNICATIONS INC COM 918866104 1780 59600 SH SOLE 59600 VANGUARD INDEX FDS REIT ETF 922908553 3597 51000 SH SOLE 51000 VICAL INC COM 925602104 398 100000 SH SOLE 100000 WELLPOINT INC COM 94973V107 6292 95000 SH SOLE 95000