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 | |
|---|---|---|---|---|---|---|
|
TGI
5651
DELISTED
Triumph Group
TGI
| $62K | ﹤0.01% |
3,337
+1,206
| +57% | +$20K |
|
5652
CALL
Visteon
VC
$2.79B
| $62K | ﹤0.01% |
700
-500
| -42% | -$45.7K |
|
5653
W&T Offshore
WTI
$534M
| $62K | ﹤0.01% |
37,893
-60,493
| -61% | -$121K |
|
|
BERY
5654
DELISTED
Berry Global Group, Inc.
BERY
| $62K | ﹤0.01% |
962
-34,266
| -97% | -$2.26M |
|
5655
CALL
ABM Industries
ABM
$2.81B
| $61K | ﹤0.01% |
1,200
-1,500
| -56% | -$81.6K |
|
5656
CALL
Alto Ingredients
ALTO
$369M
| $61K | ﹤0.01% |
39,600
-17,800
| -31% | -$27.9K |
|
|
AUTL
5657
PUT
Autolus Therapeutics
AUTL
$397M
| $61K | ﹤0.01% |
26,000
+17,400
| +202% | +$58.8K |
|
5658
CALL
Clarivate
CLVT
$1.27B
| $61K | ﹤0.01% |
12,200
+9,900
| +430% | +$57K |
|
5659
iShares GSCI Commodity Dynamic Roll Strategy ETF
COMT
$1.18B
| $61K | ﹤0.01% |
2,430
-6
| -0.2% | -$156 |
|
5660
Designer Brands
DBI
$307M
| $61K | ﹤0.01% |
+11,520
| New | +$64.5K |
|
5661
Fomento Económico Mexicano
FMX
$43.6B
| $61K | ﹤0.01% |
718
-971
| -57% | -$90.1K |
|
5662
PUT
Granite Construction
GVA
$5.29B
| $61K | ﹤0.01% |
700
-1,100
| -61% | -$99.1K |
|
5663
Coca-Cola Femsa
KOF
$22.7B
| $61K | ﹤0.01% |
+788
| New | +$64.9K |
|
5664
PUT
Lazard
LAZ
$4.13B
| $61K | ﹤0.01% |
1,200
-37,800
| -97% | -$2.02M |
|
5665
CALL
Rocket Pharmaceuticals
RCKT
$340M
| $61K | ﹤0.01% |
4,900
-1,900
| -28% | -$28.6K |
|
5666
PUT
RPM International
RPM
$13.7B
| $61K | ﹤0.01% |
500
-5,800
| -92% | -$765K |
|
5667
PUT
Sera Prognostics
SERA
$79.9M
| $61K | ﹤0.01% |
7,500
+7,300
| +3,650% | +$53.7K |
|
5668
PUT
Trevi Therapeutics
TRVI
$2.59B
| $61K | ﹤0.01% |
+15,000
| New | +$48K |
|
5669
CALL
Sixth Street Specialty
TSLX
$1.63B
| $61K | ﹤0.01% |
2,900
+1,100
| +61% | +$22.8K |
|
5670
PUT
Textron
TXT
$14.7B
| $61K | ﹤0.01% |
800
-17,500
| -96% | -$1.47M |
|
|
VRE
5671
PUT
DELISTED
Veris Residential
VRE
| $61K | ﹤0.01% |
3,700
| – | – |
|
|
WNS
5672
PUT
DELISTED
WNS Holdings
WNS
| $61K | ﹤0.01% |
+1,300
| New | +$64.2K |
|
|
SOBO
5673
PUT
South Bow Corp
SOBO
$7.74B
| $61K | ﹤0.01% |
+2,600
| New | +$63.7K |
|
|
PTVE
5674
PUT
DELISTED
Pactiv Evergreen Inc. Common stock
PTVE
| $61K | ﹤0.01% |
3,500
+600
| +21% | +$8.12K |
|
5675
CALL
Amalgamated Financial
AMAL
$1.48B
| $60K | ﹤0.01% |
1,800
+1,600
| +800% | +$55K |
|
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.