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 | |
|---|---|---|---|---|---|---|
1151
PUT
Enterprise Products Partners
EPD
$83.8B
| $8.06M | 0.01% |
278,000
+69,600
| +33% | +$2M |
|
1152
PUT
Synchrony
SYF
$23.8B
| $8.04M | 0.01% |
170,500
-38,900
| -19% | -$1.69M |
|
1153
CALL
United States Oil Fund
USO
$2.41B
| $8.04M | 0.01% |
101,000
-267,300
| -73% | -$20.8M |
|
1154
CALL
Lamb Weston
LW
$6.72B
| $8.02M | 0.01% |
95,400
+40,100
| +73% | +$3.42M |
|
1155
British American Tobacco
BTI
$131B
| $8.01M | ﹤0.01% |
258,941
+57,402
| +28% | +$1.74M |
|
|
UCD
1156
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $8M | ﹤0.01% |
200,800
+64,500
| +47% | +$2.57M |
|
|
NKLA
1157
PUT
DELISTED
Nikola Corporation Common Stock
NKLA
| $7.99M | ﹤0.01% |
975,300
+919,193
| +1,638% | +$16.4M |
|
1158
CALL
Texas Roadhouse
TXRH
$12.8B
| $7.98M | ﹤0.01% |
46,500
+26,100
| +128% | +$4.26M |
|
1159
PUT
Royal Gold
RGLD
$17.2B
| $7.97M | ﹤0.01% |
63,700
+18,700
| +42% | +$2.33M |
|
1160
PUT
Teradyne
TER
$56.6B
| $7.96M | ﹤0.01% |
53,700
+2,500
| +5% | +$318K |
|
|
XIFR
1161
CALL
XPLR Infrastructure LP
XIFR
$1.19B
| $7.96M | ﹤0.01% |
288,100
+77,600
| +37% | +$2.35M |
|
1162
CALL
Teck Resources
TECK
$29.9B
| $7.96M | ﹤0.01% |
166,200
-42,500
| -20% | -$2.09M |
|
1163
CALL
AES
AES
$10.6B
| $7.94M | ﹤0.01% |
451,700
+1,100
| +0.2% | +$20.9K |
|
1164
CALL
Tower Semiconductor
TSEM
$27.4B
| $7.94M | ﹤0.01% |
201,900
-365,900
| -64% | -$13M |
|
1165
PUT
Amphenol
APH
$192B
| $7.92M | ﹤0.01% |
117,600
-72,000
| -38% | -$4.54M |
|
1166
PUT
Western Alliance Bancorporation
WAL
$9.07B
| $7.92M | ﹤0.01% |
126,100
-94,400
| -43% | -$5.71M |
|
1167
PUT
PPG Industries
PPG
$26B
| $7.84M | ﹤0.01% |
62,300
-1,000
| -2% | -$132K |
|
1168
PUT
Teva Pharmaceuticals
TEVA
$36B
| $7.83M | ﹤0.01% |
481,900
-774,700
| -62% | -$11.9M |
|
|
1169
CALL
Enterprise Products Partners
EPD
$83.8B
| $7.82M | ﹤0.01% |
269,900
-226,400
| -46% | -$6.49M |
|
|
ZVOL
1170
CALL
Volatility Premium Plus ETF
ZVOL
$13M
| $7.81M | ﹤0.01% |
+246,500
| New | +$5.77M |
|
1171
PUT
Antero Resources
AR
$11B
| $7.8M | ﹤0.01% |
239,100
-574,600
| -71% | -$18.8M |
|
1172
CALL
Interactive Brokers
IBKR
$41B
| $7.8M | ﹤0.01% |
254,400
+188,000
| +283% | +$5.61M |
|
1173
PUT
BioMarin Pharmaceuticals
BMRN
$11.5B
| $7.79M | ﹤0.01% |
94,600
+23,500
| +33% | +$1.96M |
|
1174
CALL
First Majestic Silver
AG
$8.21B
| $7.78M | ﹤0.01% |
1,314,000
+954,200
| +265% | +$6.61M |
|
1175
CALL
Maplebear
CART
$10B
| $7.76M | ﹤0.01% |
241,400
-257,100
| -52% | -$8.85M |
|
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.