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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2276
PNC Financial Services
PNC
$100B
| $2.27M | ﹤0.01% |
+14,054
| New | +$2.12M |
|
2277
PUT
Global E Online
GLBE
$6.08B
| $2.26M | ﹤0.01% |
62,300
+2,300
| +4% | +$85.3K |
|
|
VTLE
2278
PUT
DELISTED
Vital Energy
VTLE
| $2.26M | ﹤0.01% |
43,100
+9,100
| +27% | +$422K |
|
2279
CALL
Icahn Enterprises
IEP
$5.17B
| $2.26M | ﹤0.01% |
133,000
+13,800
| +12% | +$254K |
|
2280
Carrier Global
CARR
$57.2B
| $2.26M | ﹤0.01% |
+38,911
| New | +$2.19M |
|
2281
PUT
Nano X Imaging
NNOX
$62.4M
| $2.26M | ﹤0.01% |
231,400
+51,200
| +28% | +$410K |
|
2282
CALL
Coca-Cola Europacific Partners
CCEP
$46.5B
| $2.26M | ﹤0.01% |
32,300
+31,000
| +2,385% | +$2.13M |
|
|
PPLC
2283
CALL
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $2.26M | ﹤0.01% |
53,000
-30,700
| -37% | -$1.31M |
|
2284
CALL
Innovative Industrial Properties
IIPR
$1.78B
| $2.26M | ﹤0.01% |
21,800
+3,800
| +21% | +$362K |
|
|
2285
Innovative Industrial Properties
IIPR
$1.78B
| $2.26M | ﹤0.01% |
21,793
+14,667
| +206% | +$1.4M |
|
2286
CALL
Cardlytics
CDLX
$21M
| $2.25M | ﹤0.01% |
15,560
+9,140
| +142% | +$772K |
|
2287
PUT
Patterson-UTI
PTEN
$3.87B
| $2.25M | ﹤0.01% |
188,600
+106,500
| +130% | +$1.18M |
|
2288
CALL
American Water Works
AWK
$26.3B
| $2.25M | ﹤0.01% |
18,400
-42,300
| -70% | -$5.2M |
|
|
ATXS
2289
CALL
DELISTED
Astria Therapeutics
ATXS
| $2.24M | ﹤0.01% |
+159,400
| New | +$1.99M |
|
2290
CALL
Globant
GLOB
$1.35B
| $2.24M | ﹤0.01% |
11,100
-4,400
| -28% | -$988K |
|
2291
CALL
Birkenstock
BIRK
$7.47B
| $2.24M | ﹤0.01% |
47,400
+28,400
| +149% | +$1.36M |
|
2292
PUT
Canadian National Railway
CNI
$78.3B
| $2.24M | ﹤0.01% |
17,000
-7,800
| -31% | -$997K |
|
2293
CALL
Corsair Gaming
CRSR
$1.05B
| $2.24M | ﹤0.01% |
181,500
+41,400
| +30% | +$538K |
|
2294
PUT
AvePoint
AVPT
$2.6B
| $2.23M | ﹤0.01% |
282,100
+69,200
| +33% | +$544K |
|
|
DO
2295
CALL
DELISTED
Diamond Offshore Drilling, Inc.
DO
| $2.23M | ﹤0.01% |
163,800
+47,900
| +41% | +$591K |
|
2296
PUT
Madison Square Garden
MSGS
$9.54B
| $2.23M | ﹤0.01% |
12,100
+4,800
| +66% | +$892K |
|
|
CIVI
2297
PUT
DELISTED
Civitas Resources
CIVI
| $2.23M | ﹤0.01% |
29,400
+22,500
| +326% | +$1.51M |
|
2298
CALL
CBIZ
CBZ
$2.29B
| $2.23M | ﹤0.01% |
28,400
+7,700
| +37% | +$535K |
|
2299
CALL
SPX Corp
SPXC
$11B
| $2.23M | ﹤0.01% |
18,100
+15,400
| +570% | +$1.67M |
|
2300
PUT
Tilray
TLRY
$479M
| $2.23M | ﹤0.01% |
90,210
+55,030
| +156% | +$1.06M |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.