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 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Baxter International
BAX
$12.5B
| $357K | 0.03% |
+10,880
| New | +$357K |
|
302
SPDR S&P Dividend ETF
SDY
$20.4B
| $355K | 0.03% |
+4,922
| New | +$355K |
|
|
GAP
303
The Gap, Inc.
GAP
$8.91B
| $353K | 0.03% |
12,387
+5,494
| +80% | +$157K |
|
304
NetEase
NTES
$91.2B
| $352K | 0.03% |
14,665
-44,405
| -75% | -$1.07M |
|
305
Larimar Therapeutics
LRMR
$332M
| $350K | 0.03% |
913
+504
| +123% | +$193K |
|
306
Alnylam Pharmaceuticals
ALNY
$62.8B
| $348K | 0.03% |
4,335
-3,548
| -45% | -$285K |
|
307
Check Point Software Technologies
CHKP
$21.1B
| $348K | 0.03% |
4,388
+370
| +9% | +$29.3K |
|
308
Direxion Daily Emerging Markets Bear 3x Shares
EDZ
$12.3M
| $347K | 0.03% |
1,387
+1,108
| +397% | +$277K |
|
309
Zions Bancorporation
ZION
$8.38B
| $347K | 0.03% |
+12,623
| New | +$347K |
|
|
CHL
310
DELISTED
China Mobile Limited
CHL
| $344K | 0.03% |
5,797
-1,865
| -24% | -$111K |
|
311
Agilent Technologies
A
$35.9B
| $342K | 0.03% |
+9,988
| New | +$342K |
|
312
ProShares UltraShort S&P500
SDS
$439M
| $341K | 0.03% |
+734
| New | +$341K |
|
313
Paycom
PAYC
$12.5B
| $339K | 0.02% |
9,444
+8,235
| +681% | +$296K |
|
|
WPZ
314
DELISTED
Williams Partners L.P.
WPZ
| $338K | 0.02% |
10,592
+5,113
| +93% | +$163K |
|
315
Credicorp
BAP
$21.1B
| $335K | 0.02% |
3,156
+2,230
| +241% | +$237K |
|
316
CVR Energy
CVI
$3.31B
| $334K | 0.02% |
8,160
+7,299
| +848% | +$299K |
|
317
EPAM Systems
EPAM
$9.17B
| $334K | 0.02% |
+4,493
| New | +$334K |
|
318
Caesarstone
CSTE
$48M
| $333K | 0.02% |
+10,964
| New | +$333K |
|
|
VER
319
DELISTED
VEREIT, Inc.
VER
| $333K | 0.02% |
8,649
+7,476
| +637% | +$288K |
|
|
WWAV
320
DELISTED
The WhiteWave Foods Company
WWAV
| $332K | 0.02% |
8,277
-28,738
| -78% | -$1.15M |
|
321
ProShares Ultra Silver
AGQ
$890M
| $331K | 0.02% |
10,864
-6,469
| -37% | -$197K |
|
322
ProShares UltraShort FTSE China 50 of ProShares Trust
FXP
$5.88M
| $331K | 0.02% |
1,822
+1,412
| +344% | +$257K |
|
323
iShares S&P 100 ETF
OEF
$22.2B
| $331K | 0.02% |
3,916
+2,490
| +175% | +$210K |
|
|
QEP
324
DELISTED
QEP RESOURCES, INC.
QEP
| $331K | 0.02% |
26,433
+19,588
| +286% | +$245K |
|
|
KSU
325
DELISTED
Kansas City Southern
KSU
| $330K | 0.02% |
3,637
+786
| +28% | +$71.3K |
|