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 | |
|---|---|---|---|---|---|---|
6276
PUT
Outfront Media
OUT
$5.62B
| $41K | ﹤0.01% |
2,946
+1,016
| +53% | +$14.9K |
|
6277
CALL
Pangaea Logistics
PANL
$493M
| $41K | ﹤0.01% |
5,300
+2,600
| +96% | +$19.3K |
|
6278
Precigen
PGEN
$2.12B
| $41K | ﹤0.01% |
26,148
-3,059
| -10% | -$4.44K |
|
6279
PUT
Privia Health
PRVA
$3.01B
| $41K | ﹤0.01% |
2,400
-7,200
| -75% | -$128K |
|
6280
CALL
QuickLogic
QUIK
$228M
| $41K | ﹤0.01% |
4,000
-18,700
| -82% | -$236K |
|
|
RDUS
6281
PUT
DELISTED
Radius Recycling
RDUS
| $41K | ﹤0.01% |
2,700
| – | – |
|
6282
PUT
Reinsurance Group of America
RGA
$15.6B
| $41K | ﹤0.01% |
+200
| New | +$40K |
|
6283
PUT
SK Telecom
SKM
$12.2B
| $41K | ﹤0.01% |
+2,000
| New | +$41.8K |
|
|
SOHU
6284
Sohu.com
SOHU
$359M
| $41K | ﹤0.01% |
2,955
-11,633
| -80% | -$140K |
|
6285
CALL
Telos
TLS
$324M
| $41K | ﹤0.01% |
10,400
+2,200
| +27% | +$8.35K |
|
|
AD
6286
Array Digital Infrastructure
AD
$3.02B
| $41K | ﹤0.01% |
752
-6,045
| -89% | -$266K |
|
6287
Universal Insurance Holdings
UVE
$1.23B
| $41K | ﹤0.01% |
2,200
-37,448
| -94% | -$728K |
|
6288
CALL
Acadia Healthcare
ACHC
$2.62B
| $40K | ﹤0.01% |
600
-23,400
| -98% | -$1.63M |
|
|
AFCG
6289
CALL
AFC Gamma
AFCG
$61.1M
| $40K | ﹤0.01% |
4,821
-27,759
| -85% | -$228K |
|
6290
CALL
Astronics
ATRO
$3.38B
| $40K | ﹤0.01% |
+2,400
| New | +$37.2K |
|
6291
American Vanguard Corp
AVD
$70.4M
| $40K | ﹤0.01% |
4,697
+588
| +14% | +$6.01K |
|
6292
PUT
Bally's
BALY
$700M
| $40K | ﹤0.01% |
3,400
-60,100
| -95% | -$768K |
|
6293
Atlanta Braves Holdings Series A
BATRA
$3.49B
| $40K | ﹤0.01% |
985
+506
| +106% | +$21K |
|
|
BRDG
6294
PUT
DELISTED
Bridge Investment Group
BRDG
| $40K | ﹤0.01% |
5,500
+700
| +15% | +$5.01K |
|
|
CPRX
6295
DELISTED
Catalyst Pharmaceutical
CPRX
| $40K | ﹤0.01% |
+2,633
| New | +$41K |
|
6296
Clearway Energy Class C
CWEN
$4.94B
| $40K | ﹤0.01% |
1,660
+1,258
| +313% | +$31.8K |
|
6297
CALL
Viant Technology
DSP
$229M
| $40K | ﹤0.01% |
4,100
-600
| -13% | -$5.6K |
|
6298
PUT
Evolution Petroleum
EPM
$131M
| $40K | ﹤0.01% |
7,600
+1,700
| +29% | +$9.54K |
|
6299
Garrett Motion
GTX
$5.78B
| $40K | ﹤0.01% |
+4,700
| New | +$43.4K |
|
|
HSAI
6300
Hesai Group
HSAI
$2.6B
| $40K | ﹤0.01% |
9,770
+2,160
| +28% | +$10.3K |
|
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.