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 | |
|---|---|---|---|---|---|---|
|
MCW
6226
CALL
DELISTED
Mister Car Wash
MCW
| $43K | ﹤0.01% |
6,100
-79,200
| -93% | -$560K |
|
6227
CALL
NerdWallet
NRDS
$592M
| $43K | ﹤0.01% |
3,000
-300
| -9% | -$4.11K |
|
6228
CALL
OFS Capital
OFS
$44.1M
| $43K | ﹤0.01% |
4,900
-700
| -13% | -$6.75K |
|
6229
CALL
Portland General Electric
POR
$5.8B
| $43K | ﹤0.01% |
1,000
-500
| -33% | -$21.5K |
|
6230
CALL
Pyxis Oncology
PYXS
$182M
| $43K | ﹤0.01% |
13,100
-5,700
| -30% | -$24K |
|
|
SHCO
6231
PUT
DELISTED
Soho House & Co
SHCO
| $43K | ﹤0.01% |
8,200
-15,600
| -66% | -$83.5K |
|
6232
Teekay
TK
$983M
| $43K | ﹤0.01% |
4,848
-75,555
| -94% | -$637K |
|
6233
PUT
Universal Corp
UVV
$1.33B
| $43K | ﹤0.01% |
900
-1,000
| -53% | -$49.9K |
|
6234
X4 Pharmaceuticals
XFOR
$377M
| $43K | ﹤0.01% |
+2,514
| New | +$82.2K |
|
|
PSTX
6235
PUT
DELISTED
Poseida Therapeutics, Inc. Common Stock
PSTX
| $43K | ﹤0.01% |
15,000
+11,300
| +305% | +$30.9K |
|
|
ARIS
6236
DELISTED
Aris Water Solutions
ARIS
| $42K | ﹤0.01% |
2,717
-1,792
| -40% | -$26.8K |
|
6237
PUT
Arvinas
ARVN
$536M
| $42K | ﹤0.01% |
1,600
-7,100
| -82% | -$226K |
|
6238
CALL
BlackSky Technology
BKSY
$919M
| $42K | ﹤0.01% |
4,925
+12
| +0.2% | +$113 |
|
6239
PUT
Blend Labs
BLND
$424M
| $42K | ﹤0.01% |
17,900
-10,800
| -38% | -$28.6K |
|
6240
Teucrium Sugar Fund
CANE
$73.9M
| $42K | ﹤0.01% |
+3,450
| New | +$41.2K |
|
6241
CALL
Coherus Oncology
CHRS
$227M
| $42K | ﹤0.01% |
24,500
-25,800
| -51% | -$51.9K |
|
6242
PUT
ClearPoint Neuro
CLPT
$437M
| $42K | ﹤0.01% |
7,800
+500
| +7% | +$2.89K |
|
|
DADA
6243
CALL
DELISTED
Dada Nexus
DADA
| $42K | ﹤0.01% |
33,700
+6,300
| +23% | +$11.3K |
|
6244
Gerdau
GGB
$9.74B
| $42K | ﹤0.01% |
+12,743
| New | +$45K |
|
6245
Corning
GLW
$116B
| $42K | ﹤0.01% |
+1,103
| New | +$38.5K |
|
6246
PUT
MeiraGTx Holdings
MGTX
$1.11B
| $42K | ﹤0.01% |
10,200
+4,800
| +89% | +$24.2K |
|
6247
PUT
NovaGold Resources
NG
$2.66B
| $42K | ﹤0.01% |
+12,400
| New | +$41.1K |
|
6248
PUT
NN Inc
NNBR
$257M
| $42K | ﹤0.01% |
14,200
+2,900
| +26% | +$10.2K |
|
6249
Insperity
NSP
$2.06B
| $42K | ﹤0.01% |
467
-155
| -25% | -$15.7K |
|
|
OLP
6250
PUT
One Liberty Properties
OLP
$532M
| $42K | ﹤0.01% |
1,800
+100
| +6% | +$2.31K |
|
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.