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 | |
|---|---|---|---|---|---|---|
1851
PUT
Blackstone Mortgage Trust
BXMT
$2.82B
| $3.7M | ﹤0.01% |
185,900
-70,100
| -27% | -$1.41M |
|
1852
CALL
Sprouts Farmers Market
SFM
$7.04B
| $3.7M | ﹤0.01% |
57,400
+32,800
| +133% | +$1.83M |
|
1853
PUT
BJs Wholesale Club
BJ
$11.9B
| $3.69M | ﹤0.01% |
48,800
-77,400
| -61% | -$5.39M |
|
1854
CALL
Cracker Barrel
CBRL
$1.2B
| $3.69M | ﹤0.01% |
50,700
+5,900
| +13% | +$428K |
|
1855
CALL
Ameriprise Financial
AMP
$46.8B
| $3.68M | ﹤0.01% |
8,400
+5,300
| +171% | +$2.12M |
|
1856
Direxion Daily 20+ Year Treasury Bull 3X ETF
TMF
$2.22B
| $3.68M | ﹤0.01% |
67,561
-5,189
| -7% | -$288K |
|
1857
Ferrari
RACE
$63.3B
| $3.68M | ﹤0.01% |
8,435
+3,444
| +69% | +$1.33M |
|
1858
CALL
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $3.67M | ﹤0.01% |
6,600
-52,400
| -89% | -$27.1M |
|
1859
PUT
Symbotic
SYM
$5.11B
| $3.66M | ﹤0.01% |
81,300
-24,100
| -23% | -$1.06M |
|
1860
PUT
DTE Energy
DTE
$31.1B
| $3.65M | ﹤0.01% |
32,600
-22,700
| -41% | -$2.45M |
|
1861
CALL
Brookfield
BN
$102B
| $3.64M | ﹤0.01% |
130,500
-9,150
| -7% | -$247K |
|
1862
CALL
Silicon Motion
SIMO
$9.19B
| $3.64M | ﹤0.01% |
47,300
-48,900
| -51% | -$3.34M |
|
1863
CALL
Academy Sports + Outdoors
ASO
$2.89B
| $3.63M | ﹤0.01% |
53,800
-100
| -0.2% | -$6.74K |
|
1864
PUT
Chemours
CC
$2.59B
| $3.63M | ﹤0.01% |
138,200
-10,800
| -7% | -$308K |
|
1865
Deutsche Bank
DB
$66.3B
| $3.63M | ﹤0.01% |
229,936
+188,664
| +457% | +$2.58M |
|
1866
CALL
Huntsman Corp
HUN
$2.24B
| $3.63M | ﹤0.01% |
139,300
+80,800
| +138% | +$2.01M |
|
1867
PUT
Golar LNG
GLNG
$4.95B
| $3.62M | ﹤0.01% |
150,500
+73,600
| +96% | +$1.64M |
|
1868
PUT
BellRing Brands
BRBR
$1.51B
| $3.62M | ﹤0.01% |
61,300
+1,700
| +3% | +$96.8K |
|
1869
CALL
Clear Secure
YOU
$5.26B
| $3.62M | ﹤0.01% |
170,000
+38,400
| +29% | +$763K |
|
|
BPMC
1870
PUT
DELISTED
Blueprint Medicines
BPMC
| $3.61M | ﹤0.01% |
38,100
+2,600
| +7% | +$223K |
|
1871
PUT
Kinder Morgan
KMI
$73.1B
| $3.61M | ﹤0.01% |
197,100
-203,600
| -51% | -$3.56M |
|
1872
Perrigo
PRGO
$1.4B
| $3.61M | ﹤0.01% |
112,210
+22,735
| +25% | +$717K |
|
1873
CALL
SPS Commerce
SPSC
$2.25B
| $3.6M | ﹤0.01% |
19,500
| – | – |
|
1874
PUT
LiveRamp
RAMP
$2.29B
| $3.59M | ﹤0.01% |
104,200
+101,800
| +4,242% | +$3.74M |
|
1875
PUT
Dutch Bros
BROS
$8.78B
| $3.59M | ﹤0.01% |
108,900
-37,700
| -26% | -$1.11M |
|
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.