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 | |
|---|---|---|---|---|---|---|
1951
Nextpower Inc
NXT
$15.2B
| $3.27M | ﹤0.01% |
+58,115
| New | +$3.09M |
|
1952
Radware
RDWR
$1.24B
| $3.25M | ﹤0.01% |
173,873
+92,062
| +113% | +$1.67M |
|
1953
Dominion Energy
D
$62.5B
| $3.25M | ﹤0.01% |
+66,105
| New | +$3.09M |
|
1954
CALL
West Pharmaceutical
WST
$23.1B
| $3.24M | ﹤0.01% |
8,200
+1,800
| +28% | +$666K |
|
1955
PUT
Crown Holdings
CCK
$12.8B
| $3.24M | ﹤0.01% |
40,900
+26,500
| +184% | +$2.17M |
|
|
IRBT
1956
CALL
DELISTED
iRobot
IRBT
| $3.24M | ﹤0.01% |
369,700
+179,900
| +95% | +$2.91M |
|
1957
CALL
FTAI Aviation
FTAI
$22.2B
| $3.24M | ﹤0.01% |
48,100
-33,700
| -41% | -$1.85M |
|
1958
CALL
MP Materials
MP
$7.35B
| $3.24M | ﹤0.01% |
226,300
-191,500
| -46% | -$3.03M |
|
1959
PUT
Keurig Dr Pepper
KDP
$40.4B
| $3.23M | ﹤0.01% |
105,500
+7,700
| +8% | +$237K |
|
1960
PUT
Helmerich & Payne
HP
$3.53B
| $3.23M | ﹤0.01% |
76,900
+69,200
| +899% | +$2.62M |
|
1961
Estee Lauder
EL
$29B
| $3.23M | ﹤0.01% |
20,953
-10,337
| -33% | -$1.47M |
|
1962
PUT
Boston Beer
SAM
$1.88B
| $3.23M | ﹤0.01% |
10,600
-600
| -5% | -$200K |
|
1963
STMicroelectronics
STM
$46B
| $3.23M | ﹤0.01% |
+74,627
| New | +$3.37M |
|
1964
CALL
Cinemark Holdings
CNK
$3.82B
| $3.22M | ﹤0.01% |
179,400
-124,900
| -41% | -$1.97M |
|
1965
PUT
Xerox
XRX
$337M
| $3.22M | ﹤0.01% |
179,800
+124,800
| +227% | +$2.19M |
|
1966
PUT
Yeti Holdings
YETI
$3.82B
| $3.22M | ﹤0.01% |
83,500
+43,400
| +108% | +$1.84M |
|
|
NVEI
1967
CALL
DELISTED
Nuvei Corporation Subordinate Voting Shares
NVEI
| $3.22M | ﹤0.01% |
101,800
+95,200
| +1,442% | +$2.41M |
|
1968
CALL
Brinker International
EAT
$8.02B
| $3.21M | ﹤0.01% |
64,700
+7,400
| +13% | +$328K |
|
1969
PUT
Radian Group
RDN
$5.14B
| $3.21M | ﹤0.01% |
96,000
+86,200
| +880% | +$2.54M |
|
1970
CALL
HSBC
HSBC
$355B
| $3.21M | ﹤0.01% |
81,500
-227,300
| -74% | -$8.87M |
|
1971
PUT
Alliance Resource Partners
ARLP
$3.18B
| $3.2M | ﹤0.01% |
159,700
+93,900
| +143% | +$1.91M |
|
1972
Futu Holdings
FUTU
$13.9B
| $3.2M | ﹤0.01% |
+59,131
| New | +$3.05M |
|
1973
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$863M
| $3.2M | ﹤0.01% |
93,119
+61,320
| +193% | +$1.75M |
|
1974
VF Corp
VFC
$6.68B
| $3.2M | ﹤0.01% |
208,482
+53,165
| +34% | +$855K |
|
1975
CALL
Eastman Chemical
EMN
$7.8B
| $3.19M | ﹤0.01% |
31,800
+27,900
| +715% | +$2.45M |
|
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.