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 | |
|---|---|---|---|---|---|---|
|
SNV
1876
PUT
DELISTED
Synovus
SNV
| $3.59M | ﹤0.01% |
89,600
-5,200
| -5% | -$195K |
|
1877
CALL
F5
FFIV
$22.1B
| $3.58M | ﹤0.01% |
18,900
-5,100
| -21% | -$941K |
|
1878
Mercado Libre
MELI
$91.3B
| $3.58M | ﹤0.01% |
2,368
-3,977
| -63% | -$6.51M |
|
1879
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $3.58M | ﹤0.01% |
126,700
-824,600
| -87% | -$23M |
|
1880
CALL
ChargePoint
CHPT
$133M
| $3.58M | ﹤0.01% |
94,130
-37,965
| -29% | -$1.49M |
|
1881
CALL
nCino
NCNO
$1.81B
| $3.57M | ﹤0.01% |
95,500
-24,800
| -21% | -$781K |
|
1882
CALL
Jacobs Solutions
J
$15.9B
| $3.57M | ﹤0.01% |
28,048
+483
| +2% | +$56.6K |
|
1883
Invesco Senior Loan ETF
BKLN
$7.1B
| $3.56M | ﹤0.01% |
+168,527
| New | +$3.56M |
|
1884
PUT
ZTO Express
ZTO
$18.2B
| $3.56M | ﹤0.01% |
170,100
-233,800
| -58% | -$4.47M |
|
1885
CALL
Ferguson
FERG
$44.7B
| $3.56M | ﹤0.01% |
16,300
+10,900
| +202% | +$2.17M |
|
1886
CALL
Helmerich & Payne
HP
$3.53B
| $3.55M | ﹤0.01% |
84,400
+29,700
| +54% | +$1.12M |
|
1887
Martin Marietta Materials
MLM
$33.6B
| $3.54M | ﹤0.01% |
5,773
+5,381
| +1,373% | +$2.94M |
|
1888
CALL
Incyte
INCY
$23.5B
| $3.54M | ﹤0.01% |
62,200
-21,500
| -26% | -$1.29M |
|
1889
PUT
AGCO
AGCO
$8.78B
| $3.54M | ﹤0.01% |
28,800
+14,400
| +100% | +$1.68M |
|
1890
CALL
Henry Schein
HSIC
$9.74B
| $3.53M | ﹤0.01% |
46,800
+4,200
| +10% | +$315K |
|
1891
PUT
Pentair
PNR
$10.2B
| $3.53M | ﹤0.01% |
41,300
-2,900
| -7% | -$220K |
|
1892
CALL
Landstar System
LSTR
$6.8B
| $3.53M | ﹤0.01% |
18,300
-2,900
| -14% | -$551K |
|
1893
PUT
Rockwell Automation
ROK
$51.4B
| $3.52M | ﹤0.01% |
12,100
+6,700
| +124% | +$1.93M |
|
|
GOOS
1894
CALL
Canada Goose Holdings
GOOS
$868M
| $3.52M | ﹤0.01% |
292,100
-30,300
| -9% | -$376K |
|
1895
PUT
Medpace
MEDP
$16.8B
| $3.52M | ﹤0.01% |
8,700
+6,200
| +248% | +$2.18M |
|
1896
CALL
EyePoint Inc
EYPT
$1.02B
| $3.52M | ﹤0.01% |
170,100
+87,200
| +105% | +$2.16M |
|
1897
CALL
Vanguard Emerging Markets Government Bond ETF
VWOB
$6.15B
| $3.51M | ﹤0.01% |
31,200
-10,200
| -25% | -$641K |
|
1898
PUT
Iris Energy
IREN
$13.2B
| $3.51M | ﹤0.01% |
649,800
+452,800
| +230% | +$2.46M |
|
1899
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $3.5M | ﹤0.01% |
35,100
+17,600
| +101% | +$1.76M |
|
1900
PUT
YPF
YPF
$20.2B
| $3.49M | ﹤0.01% |
176,300
-29,000
| -14% | -$503K |
|
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.