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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SRTA
7476
PUT
Strata Critical Medical Inc
SRTA
$445M
| $9K | ﹤0.01% |
2,800
-9,900
| -78% | -$33K |
|
7477
Bank of Marin Bancorp
BMRC
$491M
| $9K | ﹤0.01% |
603
+40
| +7% | +$615 |
|
7478
PUT
Broadwind
BWEN
$112M
| $9K | ﹤0.01% |
2,800
-5,900
| -68% | -$17.6K |
|
7479
PUT
Cibus
CBUS
$138M
| $9K | ﹤0.01% |
1,000
-4,200
| -81% | -$63.5K |
|
7480
Cerus
CERS
$615M
| $9K | ﹤0.01% |
5,594
-9,364
| -63% | -$16.7K |
|
7481
PUT
Compugen
CGEN
$225M
| $9K | ﹤0.01% |
5,600
-5,700
| -50% | -$11.9K |
|
7482
PUT
CI&T Inc
CINT
$409M
| $9K | ﹤0.01% |
1,800
-8,700
| -83% | -$37.2K |
|
|
CTO
7483
CTO Realty Growth
CTO
$744M
| $9K | ﹤0.01% |
+532
| New | +$9.21K |
|
7484
CALL
Customers Bancorp
CUBI
$2.66B
| $9K | ﹤0.01% |
200
-15,200
| -99% | -$717K |
|
7485
Consolidated Water Co
CWCO
$472M
| $9K | ﹤0.01% |
+352
| New | +$9.21K |
|
7486
CALL
Crexendo
CXDO
$224M
| $9K | ﹤0.01% |
3,000
-200
| -6% | -$779 |
|
|
DNB
7487
PUT
DELISTED
Dun & Bradstreet
DNB
| $9K | ﹤0.01% |
+1,000
| New | +$9.62K |
|
7488
CALL
Denali Therapeutics
DNLI
$3.74B
| $9K | ﹤0.01% |
400
-28,000
| -99% | -$538K |
|
|
EHAB
7489
CALL
DELISTED
Enhabit
EHAB
| $9K | ﹤0.01% |
1,100
-10,000
| -90% | -$95.6K |
|
7490
First American
FAF
$7.79B
| $9K | ﹤0.01% |
+178
| New | +$9.89K |
|
7491
Farmers & Merchants Bancorp
FMAO
$430M
| $9K | ﹤0.01% |
+410
| New | +$8.86K |
|
7492
Globus Maritime Ltd
GLBS
$63M
| $9K | ﹤0.01% |
+4,853
| New | +$9.95K |
|
7493
Hilton Grand Vacations
HGV
$3.98B
| $9K | ﹤0.01% |
239
-219
| -48% | -$9.3K |
|
7494
CALL
Huron Consulting
HURN
$1.89B
| $9K | ﹤0.01% |
100
-3,900
| -98% | -$359K |
|
7495
PUT
Hancock Whitney
HWC
$6.07B
| $9K | ﹤0.01% |
200
| – | – |
|
7496
Knowles
KN
$3.2B
| $9K | ﹤0.01% |
531
+308
| +138% | +$5.17K |
|
7497
PUT
KNOT Offshore Partners
KNOP
$353M
| $9K | ﹤0.01% |
1,100
+100
| +10% | +$599 |
|
7498
CALL
Key Tronic
KTCC
$43.8M
| $9K | ﹤0.01% |
2,400
| – | – |
|
7499
PUT
Liberty Latin America Class C
LILAK
$1.55B
| $9K | ﹤0.01% |
1,100
-4,950
| -82% | -$36.9K |
|
|
RJET
7500
PUT
Republic Airways Holdings
RJET
$839M
| $9K | ﹤0.01% |
+367
| New | +$6.01K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.