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
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
376
PUT
Valero Energy
VLO
$92.3B
| $38.1M | 0.02% |
242,800
-250,200
| -51% | -$40.4M |
|
377
CALL
Apollo Global Management
APO
$68.6B
| $38M | 0.02% |
321,600
-93,100
| -22% | -$10.6M |
|
378
CALL
EOG Resources
EOG
$76.7B
| $37.8M | 0.02% |
300,300
-33,700
| -10% | -$4.32M |
|
379
CALL
DuPont de Nemours
DD
$18.9B
| $37.5M | 0.02% |
371,486
-144,674
| -28% | -$14.2M |
|
380
PUT
Sea Limited
SE
$64.2B
| $37.5M | 0.02% |
524,400
-711,300
| -58% | -$47M |
|
381
PUT
Zoom
ZM
$25.2B
| $37.4M | 0.02% |
631,700
+175,100
| +38% | +$10.8M |
|
382
CALL
HP
HPQ
$23B
| $37.4M | 0.02% |
1,066,800
+256,300
| +32% | +$8.13M |
|
383
PUT
AT&T
T
$160B
| $37.2M | 0.02% |
1,945,100
+525,600
| +37% | +$9.14M |
|
384
CALL
MongoDB
MDB
$24.5B
| $37.2M | 0.02% |
148,700
-22,600
| -13% | -$7.14M |
|
385
CALL
Capital One
COF
$124B
| $37.1M | 0.02% |
268,300
-160,100
| -37% | -$22.5M |
|
386
CALL
Take-Two Interactive
TTWO
$43.4B
| $37.1M | 0.02% |
238,700
+21,100
| +10% | +$3.2M |
|
387
CALL
Vale
VALE
$63.2B
| $37M | 0.02% |
3,312,200
+2,210,200
| +201% | +$26.6M |
|
388
PUT
International Paper
IP
$20.2B
| $36.9M | 0.02% |
855,500
+636,800
| +291% | +$25.9M |
|
389
CALL
American Airlines Group
AAL
$9.78B
| $36.8M | 0.02% |
3,244,500
-766,200
| -19% | -$10.1M |
|
390
PUT
Pinterest
PINS
$12.6B
| $36.8M | 0.02% |
834,000
-498,900
| -37% | -$19.7M |
|
391
CALL
TJX Companies
TJX
$172B
| $36.7M | 0.02% |
333,200
-43,600
| -12% | -$4.39M |
|
392
PUT
Cigna
CI
$75.4B
| $36.6M | 0.02% |
110,800
-47,000
| -30% | -$16.2M |
|
393
CALL
Ford
F
$57.5B
| $36.6M | 0.02% |
2,917,000
-1,579,600
| -35% | -$19.5M |
|
394
CALL
United Airlines
UAL
$38.1B
| $36.5M | 0.02% |
749,300
-271,700
| -27% | -$13.7M |
|
395
Amazon
AMZN
$2.63T
| $36.5M | 0.02% |
+188,667
| New | +$34.7M |
|
396
PUT
Hershey
HSY
$35B
| $36.4M | 0.02% |
198,200
+18,100
| +10% | +$3.5M |
|
397
CALL
Chewy
CHWY
$8.81B
| $36.1M | 0.02% |
1,327,000
-931,600
| -41% | -$17.7M |
|
398
PUT
Vistra
VST
$56.2B
| $36M | 0.02% |
418,500
-77,800
| -16% | -$6.51M |
|
399
CALL
Constellation Energy
CEG
$98.2B
| $36M | 0.02% |
179,600
+79,800
| +80% | +$16.3M |
|
400
CALL
Corning
GLW
$133B
| $35.9M | 0.02% |
924,300
+341,600
| +59% | +$11.9M |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.