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 | |
|---|---|---|---|---|---|---|
|
UROY
4076
CALL
Uranium Royalty Corp
UROY
$408M
| $296K | ﹤0.01% |
135,600
-130,200
| -49% | -$335K |
|
|
PLCY
4077
PUT
DELISTED
EventShares U.S. Legislative Opportunities ETF
PLCY
| $296K | ﹤0.01% |
+16,000
| New | +$296K |
|
4078
Cracker Barrel
CBRL
$1.2B
| $295K | ﹤0.01% |
+5,594
| New | +$277K |
|
4079
PUT
California Resources
CRC
$4.38B
| $295K | ﹤0.01% |
5,700
-53,000
| -90% | -$2.88M |
|
4080
POET Technologies
POET
$1.17B
| $295K | ﹤0.01% |
49,715
+19,387
| +64% | +$86K |
|
4081
CALL
abrdn Physical Gold Shares ETF
SGOL
$6.87B
| $295K | ﹤0.01% |
11,800
-4,800
| -29% | -$122K |
|
4082
PUT
SkyWater Technology
SKYT
$1.53B
| $295K | ﹤0.01% |
21,400
+16,600
| +346% | +$165K |
|
4083
IDT Corp
IDT
$1.69B
| $294K | ﹤0.01% |
+6,192
| New | +$297K |
|
4084
PUT
Innovative Industrial Properties
IIPR
$1.76B
| $293K | ﹤0.01% |
4,400
-200
| -4% | -$22.5K |
|
4085
Barnes & Noble Education
BNED
$451M
| $292K | ﹤0.01% |
+29,104
| New | +$298K |
|
4086
CALL
Ondas Inc
ONDS
$4.48B
| $292K | ﹤0.01% |
114,400
+111,000
| +3,265% | +$115K |
|
|
BCOV
4087
CALL
DELISTED
Brightcove, Inc.
BCOV
| $292K | ﹤0.01% |
67,300
+35,200
| +110% | +$113K |
|
4088
PUT
BGC Group
BGC
$5.73B
| $291K | ﹤0.01% |
32,200
+28,700
| +820% | +$276K |
|
4089
PUT
Clearway Energy Class C
CWEN
$4.9B
| $291K | ﹤0.01% |
11,200
+9,800
| +700% | +$271K |
|
4090
PUT
Federal Realty Investment Trust
FRT
$10.9B
| $291K | ﹤0.01% |
2,600
| – | – |
|
|
LAC
4091
Lithium Americas
LAC
$972M
| $291K | ﹤0.01% |
98,291
-192,083
| -66% | -$666K |
|
4092
CALL
ClearPoint Neuro
CLPT
$436M
| $290K | ﹤0.01% |
18,900
+13,900
| +278% | +$180K |
|
4093
ProShares Ultra Russell2000
UWM
$249M
| $290K | ﹤0.01% |
6,948
-1,727
| -20% | -$78.1K |
|
|
JBTM
4094
CALL
JBT Marel
JBTM
$7.59B
| $290K | ﹤0.01% |
17,600
+4,600
| +35% | +$531K |
|
|
DDL
4095
Dingdong
DDL
$527M
| $289K | ﹤0.01% |
88,201
+86,156
| +4,213% | +$333K |
|
4096
Domo
DOMO
$170M
| $289K | ﹤0.01% |
40,822
+4,285
| +12% | +$34.7K |
|
4097
PUT
DXP Enterprises
DXPE
$2.49B
| $289K | ﹤0.01% |
3,500
+2,900
| +483% | +$190K |
|
4098
PUT
Element Solutions
ESI
$8.89B
| $289K | ﹤0.01% |
11,400
+9,900
| +660% | +$268K |
|
4099
CALL
FNB Corp
FNB
$6.81B
| $289K | ﹤0.01% |
19,600
+6,100
| +45% | +$93.6K |
|
|
CWAN
4100
DELISTED
Clearwater Analytics
CWAN
| $288K | ﹤0.01% |
+10,482
| New | +$297K |
|
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.