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 | |
|---|---|---|---|---|---|---|
201
Truist Financial
TFC
$60B
| $569K | 0.04% |
16,000
+11,654
| +268% | +$414K |
|
202
Blackrock
BLK
$170B
| $566K | 0.04% |
+1,903
| New | +$566K |
|
203
KLA
KLAC
$119B
| $563K | 0.04% |
11,260
+1,560
| +16% | +$78K |
|
204
Direxion Daily Energy Bull 2X Shares
ERX
$218M
| $561K | 0.04% |
2,194
+1,387
| +172% | +$355K |
|
|
NE
205
DELISTED
Noble Corporation
NE
| $558K | 0.04% |
51,197
+27,932
| +120% | +$304K |
|
|
ICPT
206
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $555K | 0.04% |
3,348
-501
| -13% | -$83.1K |
|
207
Commault Systems
CVLT
$7.96B
| $541K | 0.04% |
15,954
+12,126
| +317% | +$411K |
|
208
PPG Industries
PPG
$24.8B
| $541K | 0.04% |
+6,173
| New | +$541K |
|
209
Eaton
ETN
$136B
| $538K | 0.04% |
+10,489
| New | +$538K |
|
210
Post Holdings
POST
$5.88B
| $538K | 0.04% |
13,923
+3,805
| +38% | +$147K |
|
211
Mastercard
MA
$528B
| $535K | 0.04% |
5,939
-13,963
| -70% | -$1.26M |
|
212
Entergy
ETR
$39.2B
| $534K | 0.04% |
16,414
+3,410
| +26% | +$111K |
|
|
RDUS
213
DELISTED
Radius Health, Inc.
RDUS
| $534K | 0.04% |
+7,708
| New | +$534K |
|
214
Coca-Cola
KO
$292B
| $533K | 0.04% |
13,310
-22,526
| -63% | -$902K |
|
215
ProShares Short QQQ
PSQ
$508M
| $532K | 0.04% |
1,831
+1,522
| +493% | +$442K |
|
216
Sonida Senior Living
SNDA
$486M
| $530K | 0.04% |
1,765
+1,677
| +1,906% | +$504K |
|
|
BDSI
217
DELISTED
BioDelivery Sciences International, Inc.
BDSI
| $528K | 0.04% |
95,130
+83,457
| +715% | +$463K |
|
218
iShares MSCI ACWI ETF
ACWI
$22.1B
| $527K | 0.04% |
9,782
+6,885
| +238% | +$371K |
|
|
ALXN
219
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $524K | 0.04% |
3,351
+349
| +12% | +$54.6K |
|
|
BWLD
220
DELISTED
Buffalo Wild Wings, Inc.
BWLD
| $516K | 0.04% |
2,672
-1,856
| -41% | -$358K |
|
|
YHOO
221
DELISTED
Yahoo Inc
YHOO
| $514K | 0.04% |
+17,789
| New | +$514K |
|
222
Shutterstock
SSTK
$713M
| $511K | 0.04% |
16,928
+12,810
| +311% | +$387K |
|
223
Amicus Therapeutics
FOLD
$2.46B
| $508K | 0.04% |
36,347
+26,188
| +258% | +$366K |
|
224
Toyota
TM
$260B
| $505K | 0.04% |
4,309
+2,671
| +163% | +$313K |
|
|
ENDP
225
DELISTED
Endo International plc
ENDP
| $505K | 0.04% |
7,294
-8,430
| -54% | -$584K |
|