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 | |
|---|---|---|---|---|---|---|
6026
Phathom Pharmaceuticals
PHAT
$708M
| $43K | ﹤0.01% |
5,395
-10,303
| -66% | -$128K |
|
6027
PUT
Polestar Automotive Holding UK
PSNY
$2.09B
| $43K | ﹤0.01% |
1,370
-2,877
| -68% | -$104K |
|
6028
abrdn Physical Gold Shares ETF
SGOL
$6.91B
| $43K | ﹤0.01% |
+1,723
| New | +$43.8K |
|
6029
SelectQuote
SLQT
$132M
| $43K | ﹤0.01% |
11,798
+7,304
| +163% | +$18.6K |
|
6030
PUT
Suzano
SUZ
$10.5B
| $43K | ﹤0.01% |
4,300
-15,500
| -78% | -$159K |
|
6031
CALL
UDR
UDR
$12.3B
| $43K | ﹤0.01% |
1,000
| – | – |
|
6032
PUT
West Fraser Timber
WFG
$5.08B
| $43K | ﹤0.01% |
500
+100
| +25% | +$9.37K |
|
6033
PUT
Assurant
AIZ
$13.8B
| $42K | ﹤0.01% |
200
-1,300
| -87% | -$270K |
|
6034
PUT
Alector
ALEC
$168M
| $42K | ﹤0.01% |
22,400
+20,100
| +874% | +$75.7K |
|
|
AUTL
6035
Autolus Therapeutics
AUTL
$397M
| $42K | ﹤0.01% |
18,057
+9,241
| +105% | +$31.2K |
|
6036
PUT
Coastal Financial
CCB
$626M
| $42K | ﹤0.01% |
+500
| New | +$34.9K |
|
|
CHCT
6037
PUT
Community Healthcare Trust
CHCT
$523M
| $42K | ﹤0.01% |
2,200
-30,900
| -93% | -$560K |
|
6038
CALL
Amdocs
DOX
$5.92B
| $42K | ﹤0.01% |
500
-2,600
| -84% | -$228K |
|
6039
CALL
Equitable Holdings
EQH
$13B
| $42K | ﹤0.01% |
900
-1,300
| -59% | -$60K |
|
6040
PUT
Ethan Allen Interiors
ETD
$570M
| $42K | ﹤0.01% |
1,500
-100
| -6% | -$2.97K |
|
6041
CALL
First Interstate BancSystem
FIBK
$3.69B
| $42K | ﹤0.01% |
+1,300
| New | +$42.3K |
|
6042
1-800-Flowers.com
FLWS
$250M
| $42K | ﹤0.01% |
5,235
+4,541
| +654% | +$36.4K |
|
6043
PUT
Finance of America Companies
FOA
$203M
| $42K | ﹤0.01% |
1,500
+200
| +15% | +$3.56K |
|
|
FPI
6044
CALL
Farmland Partners
FPI
$408M
| $42K | ﹤0.01% |
3,600
-27,500
| -88% | -$323K |
|
6045
PUT
Holley
HLLY
$321M
| $42K | ﹤0.01% |
+14,100
| New | +$39.5K |
|
6046
PUT
Hycroft Mining Holding Corp
HYMC
$1.82B
| $42K | ﹤0.01% |
20,200
-3,800
| -16% | -$8.99K |
|
6047
Kraft Heinz
KHC
$30.7B
| $42K | ﹤0.01% |
+1,386
| New | +$45.4K |
|
6048
KULR Technology Group
KULR
$123M
| $42K | ﹤0.01% |
+1,512
| New | +$11.8K |
|
6049
Fidelity Nasdaq Composite Index ETF
ONEQ
$10.4B
| $42K | ﹤0.01% |
+553
| New | +$41.4K |
|
6050
CALL
Palomar
PLMR
$3.55B
| $42K | ﹤0.01% |
+400
| New | +$40.6K |
|
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.