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 | |
|---|---|---|---|---|---|---|
6426
CALL
Alamo Group
ALG
$1.91B
| $34K | ﹤0.01% |
200
-400
| -67% | -$78K |
|
6427
CALL
Alkami Technology
ALKT
$1.96B
| $34K | ﹤0.01% |
1,200
-19,200
| -94% | -$496K |
|
6428
PUT
Arcturus Therapeutics
ARCT
$165M
| $34K | ﹤0.01% |
1,400
-1,300
| -48% | -$39.4K |
|
|
LONA
6429
LeonaBio Inc
LONA
$66.1M
| $34K | ﹤0.01% |
1,301
-532
| -29% | -$12.5K |
|
6430
PUT
Atmos Energy
ATO
$29.7B
| $34K | ﹤0.01% |
300
-1,300
| -81% | -$151K |
|
6431
PUT
Avient
AVNT
$3.29B
| $34K | ﹤0.01% |
800
-1,200
| -60% | -$52.5K |
|
|
DCH
6432
CALL
Dauch Corp
DCH
$1.31B
| $34K | ﹤0.01% |
4,900
-114,300
| -96% | -$843K |
|
|
BPT
6433
CALL
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $34K | ﹤0.01% |
+14,000
| New | +$33.8K |
|
6434
CALL
Consensus Cloud Solutions
CCSI
$675M
| $34K | ﹤0.01% |
2,000
+1,900
| +1,900% | +$30.7K |
|
6435
CALL
Columbus McKinnon
CMCO
$422M
| $34K | ﹤0.01% |
1,000
+100
| +11% | +$4.06K |
|
6436
PUT
Cavco Industries
CVCO
$4.36B
| $34K | ﹤0.01% |
100
| – | – |
|
6437
PUT
CryoPort
CYRX
$753M
| $34K | ﹤0.01% |
5,000
-86,000
| -95% | -$1.16M |
|
|
DRRX
6438
PUT
DELISTED
DURECT Corp
DRRX
| $34K | ﹤0.01% |
26,700
+5,200
| +24% | +$6.12K |
|
|
EU
6439
PUT
enCore Energy
EU
$206M
| $34K | ﹤0.01% |
8,700
+3,500
| +67% | +$15.5K |
|
6440
Expensify
EXFY
$174M
| $34K | ﹤0.01% |
23,410
+475
| +2% | +$749 |
|
6441
PUT
Genius Sports
GENI
$1.95B
| $34K | ﹤0.01% |
6,400
-4,300
| -40% | -$23K |
|
|
HSII
6442
DELISTED
Heidrick & Struggles
HSII
| $34K | ﹤0.01% |
1,089
+989
| +989% | +$32.2K |
|
6443
CALL
Imperial Oil
IMO
$62.3B
| $34K | ﹤0.01% |
500
-400
| -44% | -$27.5K |
|
6444
PUT
Innoviva
INVA
$1.6B
| $34K | ﹤0.01% |
2,100
-500
| -19% | -$7.76K |
|
6445
PUT
Ituran Location and Control
ITRN
$1.08B
| $34K | ﹤0.01% |
1,400
+1,100
| +367% | +$29.2K |
|
6446
CALL
Kingstone Companies
KINS
$295M
| $34K | ﹤0.01% |
6,900
+5,900
| +590% | +$26.9K |
|
6447
PUT
Coca-Cola Femsa
KOF
$22.5B
| $34K | ﹤0.01% |
400
| – | – |
|
|
KW
6448
CALL
DELISTED
Kennedy-Wilson Holdings
KW
| $34K | ﹤0.01% |
3,500
+1,500
| +75% | +$14K |
|
6449
LoveSac
LOVE
$242M
| $34K | ﹤0.01% |
+1,524
| New | +$36.8K |
|
6450
CALL
LivePerson
LPSN
$22M
| $34K | ﹤0.01% |
3,967
-3,246
| -45% | -$31.2K |
|
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.