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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3576
Teucrium Wheat Fund
WEAT
$293M
| $484K | ﹤0.01% |
20,108
-490
| -2% | -$12.3K |
|
3577
CALL
Onto Innovation
ONTO
$13B
| $483K | ﹤0.01% |
2,900
-11,500
| -80% | -$2.1M |
|
3578
CALL
IAMGOLD
IAG
$8.5B
| $482K | ﹤0.01% |
93,500
+21,100
| +29% | +$113K |
|
|
AMED
3579
CALL
DELISTED
Amedisys
AMED
| $481K | ﹤0.01% |
5,300
+3,400
| +179% | +$312K |
|
3580
PUT
Heartland Express
HTLD
$1.06B
| $481K | ﹤0.01% |
42,900
+42,700
| +21,350% | +$502K |
|
3581
CALL
Old Republic International
ORI
$10.5B
| $481K | ﹤0.01% |
13,300
+6,200
| +87% | +$226K |
|
|
SMCX
3582
Defiance Daily Target 2X Long SMCI ETF
SMCX
$173M
| $481K | ﹤0.01% |
6,133
+6,049
| +7,201% | +$1.14M |
|
3583
CALL
LendingTree
TREE
$564M
| $480K | ﹤0.01% |
12,400
+7,700
| +164% | +$369K |
|
3584
PUT
CVR Energy
CVI
$3.43B
| $479K | ﹤0.01% |
25,600
-11,500
| -31% | -$232K |
|
3585
CALL
Vuzix
VUZI
$193M
| $479K | ﹤0.01% |
121,800
+28,100
| +30% | +$57.6K |
|
|
KREF
3586
PUT
KKR Real Estate Finance Trust
KREF
$471M
| $478K | ﹤0.01% |
47,400
+47,200
| +23,600% | +$541K |
|
|
DFTX
3587
PUT
Definium Therapeutics
DFTX
$5.66B
| $478K | ﹤0.01% |
68,800
+34,700
| +102% | +$239K |
|
3588
Polaris
PII
$4.25B
| $478K | ﹤0.01% |
+8,300
| New | +$578K |
|
3589
CALL
Vicor
VICR
$9.41B
| $478K | ﹤0.01% |
9,900
+2,600
| +36% | +$130K |
|
3590
Treace Medical Concepts
TMCI
$265M
| $477K | ﹤0.01% |
64,117
+61,458
| +2,311% | +$411K |
|
|
ALTM
3591
PUT
DELISTED
Arcadium Lithium plc
ALTM
| $477K | ﹤0.01% |
93,000
-33,600
| -27% | -$172K |
|
|
NOTV
3592
CALL
DELISTED
Inotiv
NOTV
| $476K | ﹤0.01% |
+115,100
| New | +$347K |
|
3593
PUT
Plains GP Holdings
PAGP
$5.16B
| $476K | ﹤0.01% |
25,900
+7,500
| +41% | +$139K |
|
|
BTCL
3594
CALL
T-Rex 2X Long Bitcoin Daily Target ETF
BTCL
$23.2M
| $476K | ﹤0.01% |
+9,900
| New | +$429K |
|
|
ESPR
3595
PUT
DELISTED
Esperion Therapeutics
ESPR
| $475K | ﹤0.01% |
216,000
+70,700
| +49% | +$165K |
|
3596
PUT
Home BancShares
HOMB
$6.21B
| $475K | ﹤0.01% |
+16,800
| New | +$485K |
|
3597
iShares Mortgage Real Estate ETF
REM
$543M
| $475K | ﹤0.01% |
22,271
+8,234
| +59% | +$187K |
|
3598
PUT
Canadian Imperial Bank of Commerce
CM
$108B
| $474K | ﹤0.01% |
7,500
-7,300
| -49% | -$464K |
|
3599
PUT
Microvast
MVST
$267M
| $474K | ﹤0.01% |
229,400
+202,000
| +737% | +$150K |
|
3600
Nu Holdings
NU
$70.2B
| $474K | ﹤0.01% |
+45,774
| New | +$609K |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.