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 | |
|---|---|---|---|---|---|---|
|
CFLT
1276
PUT
DELISTED
Confluent
CFLT
| $6.42M | ﹤0.01% |
217,300
-57,000
| -21% | -$1.64M |
|
1277
PUT
Lucid Motors
LCID
$2.46B
| $6.4M | ﹤0.01% |
245,220
-29,950
| -11% | -$799K |
|
1278
PUT
Plug Power
PLUG
$2.93B
| $6.39M | ﹤0.01% |
2,741,700
-908,500
| -25% | -$2.6M |
|
1279
CALL
SL Green Realty
SLG
$3.88B
| $6.37M | ﹤0.01% |
112,500
-57,400
| -34% | -$3.02M |
|
1280
CALL
Bank OZK
OZK
$5.49B
| $6.35M | ﹤0.01% |
154,900
+54,000
| +54% | +$2.35M |
|
1281
Wolfspeed
WOLF
$1.2B
| $6.33M | ﹤0.01% |
277,965
+70,306
| +34% | +$1.82M |
|
1282
CALL
Global E Online
GLBE
$6.08B
| $6.33M | ﹤0.01% |
174,400
+29,500
| +20% | +$952K |
|
1283
CALL
Northern Oil and Gas
NOG
$2.3B
| $6.32M | ﹤0.01% |
170,000
+15,000
| +10% | +$602K |
|
|
K
1284
CALL
DELISTED
Kellanova
K
| $6.31M | ﹤0.01% |
125,900
-52,600
| -29% | -$3.1M |
|
1285
PUT
Hasbro
HAS
$12.6B
| $6.31M | ﹤0.01% |
107,800
-297,200
| -73% | -$17.6M |
|
1286
CALL
KeyCorp
KEY
$24.3B
| $6.3M | ﹤0.01% |
443,600
-108,100
| -20% | -$1.57M |
|
1287
PUT
HDFC Bank
HDB
$119B
| $6.3M | ﹤0.01% |
195,800
+20,600
| +12% | +$603K |
|
1288
CALL
ProShares Ultra S&P500
SSO
$7.82B
| $6.28M | ﹤0.01% |
130,800
-273,200
| -68% | -$10.5M |
|
1289
PUT
Schwab US Broad Market ETF
SCHB
$42.8B
| $6.26M | ﹤0.01% |
251,700
+78,900
| +46% | +$1.6M |
|
1290
CALL
Becton Dickinson
BDX
$43.1B
| $6.24M | ﹤0.01% |
26,700
-11,500
| -30% | -$2.71M |
|
1291
PUT
Cognizant
CTSH
$21.5B
| $6.24M | ﹤0.01% |
91,700
+35,600
| +63% | +$2.41M |
|
1292
CALL
XPeng
XPEV
$11.8B
| $6.23M | ﹤0.01% |
849,800
-596,700
| -41% | -$4.71M |
|
1293
PUT
Canadian Solar
CSIQ
$906M
| $6.22M | ﹤0.01% |
421,900
-109,100
| -21% | -$1.85M |
|
1294
PUT
Noble Corp
NE
$6.9B
| $6.2M | ﹤0.01% |
138,900
-45,600
| -25% | -$2.11M |
|
|
JPGE
1295
CALL
DELISTED
JPMorgan Diversified Return Global Equity ETF
JPGE
| $6.18M | ﹤0.01% |
109,100
+42,500
| +64% | +$2.41M |
|
1296
PUT
STMicroelectronics
STM
$46B
| $6.18M | ﹤0.01% |
157,400
-64,600
| -29% | -$2.68M |
|
1297
PUT
TKO Group
TKO
$13.5B
| $6.18M | ﹤0.01% |
57,200
+13,300
| +30% | +$1.35M |
|
1298
CALL
GE Vernova
GEV
$270B
| $6.17M | ﹤0.01% |
+36,000
| New | +$5.7M |
|
1299
PUT
Peloton Interactive
PTON
$2.63B
| $6.16M | ﹤0.01% |
1,822,700
+53,400
| +3% | +$191K |
|
1300
PUT
SolarEdge
SEDG
$2.59B
| $6.16M | ﹤0.01% |
243,800
-134,500
| -36% | -$6.99M |
|
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.