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 | |
|---|---|---|---|---|---|---|
|
XYZ
2001
PUT
Block Inc
XYZ
$45.9B
| $2.5M | ﹤0.01% |
1,116,900
+220,000
| +25% | +$18M |
|
2002
CALL
Bank of Montreal
BMO
$125B
| $2.49M | ﹤0.01% |
25,700
-54,300
| -68% | -$5.13M |
|
2003
Knight Transportation
KNX
$11.8B
| $2.49M | ﹤0.01% |
47,030
+34,503
| +275% | +$1.88M |
|
2004
Dow Inc
DOW
$21.6B
| $2.49M | ﹤0.01% |
+62,223
| New | +$2.9M |
|
2005
PUT
Range Resources
RRC
$9.11B
| $2.49M | ﹤0.01% |
69,300
+50,900
| +277% | +$1.68M |
|
2006
CALL
AvePoint
AVPT
$2.6B
| $2.49M | ﹤0.01% |
150,900
-2,000
| -1% | -$30.4K |
|
2007
CALL
UWM Holdings
UWMC
$621M
| $2.49M | ﹤0.01% |
424,300
+176,200
| +71% | +$1.15M |
|
|
FFAI
2008
CALL
Faraday Future Intelligent Electric
FFAI
$15.8M
| $2.49M | ﹤0.01% |
6,833
-1,113
| -14% | -$295K |
|
2009
PUT
Corvus Pharmaceuticals
CRVS
$1.1B
| $2.48M | ﹤0.01% |
463,500
+448,400
| +2,970% | +$3.35M |
|
|
JNPR
2010
CALL
DELISTED
Juniper Networks
JNPR
| $2.48M | ﹤0.01% |
66,100
+9,800
| +17% | +$371K |
|
2011
CALL
Arvinas
ARVN
$518M
| $2.47M | ﹤0.01% |
129,100
+125,400
| +3,389% | +$3.05M |
|
|
GOGL
2012
CALL
DELISTED
Golden Ocean Group
GOGL
| $2.47M | ﹤0.01% |
275,900
+70,100
| +34% | +$755K |
|
2013
CALL
Valvoline
VVV
$4.97B
| $2.47M | ﹤0.01% |
68,200
+61,600
| +933% | +$2.46M |
|
2014
PUT
AdaptHealth
AHCO
$1.46B
| $2.46M | ﹤0.01% |
258,400
+242,200
| +1,495% | +$2.45M |
|
2015
CALL
Root
ROOT
$917M
| $2.45M | ﹤0.01% |
33,800
-1,000
| -3% | -$69.1K |
|
|
HES
2016
CALL
DELISTED
Hess
HES
| $2.45M | ﹤0.01% |
18,400
+1,000
| +6% | +$140K |
|
2017
PUT
Talos Energy
TALO
$2.49B
| $2.45M | ﹤0.01% |
252,000
-800
| -0.3% | -$8.42K |
|
2018
Clorox
CLX
$11.6B
| $2.43M | ﹤0.01% |
14,958
-20,166
| -57% | -$3.3M |
|
|
EH
2019
CALL
EHang Holdings
EH
$372M
| $2.42M | ﹤0.01% |
154,000
+9,100
| +6% | +$146K |
|
2020
PUT
Alliance Resource Partners
ARLP
$3.18B
| $2.42M | ﹤0.01% |
92,100
+20,100
| +28% | +$526K |
|
2021
PUT
Omega Healthcare
OHI
$15.4B
| $2.42M | ﹤0.01% |
63,900
+200
| +0.3% | +$7.99K |
|
|
LAC
2022
PUT
Lithium Americas
LAC
$986M
| $2.41M | ﹤0.01% |
710,800
+411,900
| +138% | +$1.43M |
|
2023
Peloton Interactive
PTON
$2.63B
| $2.41M | ﹤0.01% |
277,277
-585,381
| -68% | -$4.56M |
|
|
UNIT
2024
CALL
Uniti Group
UNIT
$2.63B
| $2.41M | ﹤0.01% |
438,600
+72,900
| +20% | +$414K |
|
2025
PUT
Guidewire Software
GWRE
$11.5B
| $2.41M | ﹤0.01% |
14,300
-16,000
| -53% | -$2.99M |
|
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.