Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$14.9M |
| 4 |
Biogen
BIIB
|
+$13.7M |
| 5 |
Visa
V
|
+$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
IMOS
451
ChipMOS TECHNOLOGIES
IMOS
$631M
| $266K | 0.02% |
+13,356
| New | +$266K |
|
452
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$486M
| $264K | 0.02% |
66
-375
| -85% | -$1.5M |
|
|
WNRL
453
DELISTED
Western Refining Logistics, LP
WNRL
| $264K | 0.02% |
10,101
+6,130
| +154% | +$160K |
|
|
FNFG
454
DELISTED
FIRST NIAGARA FINANCIAL GROUP INC
FNFG
| $264K | 0.02% |
27,181
+544
| +2% | +$5.28K |
|
|
FGL
455
DELISTED
Fidelity & Guaranty Life
FGL
| $264K | 0.02% |
+11,403
| New | +$264K |
|
456
ATI
ATI
$10.3B
| $263K | 0.02% |
20,683
-17,414
| -46% | -$221K |
|
457
Edwards Lifesciences
EW
$46.9B
| $263K | 0.02% |
7,917
+3,987
| +101% | +$132K |
|
|
PBCT
458
DELISTED
People's United Financial Inc
PBCT
| $263K | 0.02% |
+17,966
| New | +$263K |
|
459
AMN Healthcare
AMN
$798M
| $262K | 0.02% |
+6,575
| New | +$262K |
|
|
CAB
460
DELISTED
Cabela's Inc
CAB
| $261K | 0.02% |
+5,214
| New | +$261K |
|
|
SODA
461
DELISTED
SodaStream International Ltd
SODA
| $260K | 0.02% |
12,217
-160
| -1% | -$3.41K |
|
|
BEAV
462
DELISTED
B/E Aerospace Inc
BEAV
| $260K | 0.02% |
5,652
+3,362
| +147% | +$155K |
|
|
AMED
463
DELISTED
Amedisys
AMED
| $255K | 0.02% |
+5,066
| New | +$255K |
|
464
Abercrombie & Fitch
ANF
$4.48B
| $255K | 0.02% |
14,323
+9,637
| +206% | +$172K |
|
465
Fair Isaac
FICO
$37.1B
| $255K | 0.02% |
2,262
+1,073
| +90% | +$121K |
|
466
ProShares Short S&P500
SH
$1.24B
| $252K | 0.02% |
1,591
+1,140
| +253% | +$181K |
|
467
MarketAxess Holdings
MKTX
$7.03B
| $249K | 0.02% |
1,714
+1,635
| +2,070% | +$238K |
|
468
Northern Trust
NTRS
$24.6B
| $249K | 0.02% |
+3,766
| New | +$249K |
|
469
Tronox
TROX
$755M
| $247K | 0.02% |
56,046
+9,643
| +21% | +$42.5K |
|
|
ANFI
470
DELISTED
AMIRA NATURE FOODS LTD
ANFI
| $246K | 0.02% |
33,270
+20,809
| +167% | +$154K |
|
471
Helix Energy Solutions
HLX
$895M
| $245K | 0.02% |
+36,277
| New | +$245K |
|
|
SONC
472
DELISTED
Sonic Corp
SONC
| $245K | 0.02% |
9,067
+6,183
| +214% | +$167K |
|
|
EVHC
473
DELISTED
Envision Healthcare Holdings Inc
EVHC
| $244K | 0.02% |
+3,222
| New | +$244K |
|
474
Exact Sciences
EXAS
$10.5B
| $243K | 0.02% |
19,894
+3,566
| +22% | +$43.6K |
|
475
Oxford Industries
OXM
$609M
| $242K | 0.02% |
4,276
+1,773
| +71% | +$100K |
|