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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
JO
6351
DELISTED
iPath Series B Bloomberg Coffee Subindex Total ReturnSM ETN
JO
| $54K | ﹤0.01% |
+892
| New | +$54K |
|
6352
CALL
Applied Optoelectronics
AAOI
$7.57B
| $53K | ﹤0.01% |
19,700
+18,300
| +1,307% | +$41.3K |
|
6353
CALL
Allegion
ALLE
$13.4B
| $53K | ﹤0.01% |
600
+200
| +50% | +$19.8K |
|
6354
PUT
Banco Bilbao Vizcaya Argentaria
BBVA
$154B
| $53K | ﹤0.01% |
12,000
-39,700
| -77% | -$180K |
|
|
CODX
6355
Co-Diagnostics
CODX
$5.31M
| $53K | ﹤0.01% |
+551
| New | +$77.1K |
|
6356
PUT
Consumer Portfolio Services
CPSS
$202M
| $53K | ﹤0.01% |
7,300
+5,400
| +284% | +$62K |
|
6357
CALL
Torrid Holdings
CURV
$254M
| $53K | ﹤0.01% |
12,800
+8,700
| +212% | +$45.6K |
|
6358
CALL
Consolidated Water Co
CWCO
$467M
| $53K | ﹤0.01% |
3,500
+2,600
| +289% | +$41K |
|
|
DENN
6359
PUT
DELISTED
Denny's
DENN
| $53K | ﹤0.01% |
5,700
+2,700
| +90% | +$25.9K |
|
6360
CALL
Cedar Fair
FUN
$1.77B
| $53K | ﹤0.01% |
1,300
-100
| -7% | -$4.25K |
|
6361
PUT
Gevo
GEVO
$360M
| $53K | ﹤0.01% |
23,400
-5,000
| -18% | -$13.9K |
|
6362
PUT
Hayward Holdings
HAYW
$3.21B
| $53K | ﹤0.01% |
6,000
+5,700
| +1,900% | +$67K |
|
6363
Immunovant
IMVT
$7.93B
| $53K | ﹤0.01% |
9,577
+9,522
| +17,313% | +$46.5K |
|
6364
iShares US Basic Materials ETF
IYM
$1.12B
| $53K | ﹤0.01% |
494
-1,900
| -79% | -$228K |
|
6365
CALL
MeiraGTx Holdings
MGTX
$1.09B
| $53K | ﹤0.01% |
6,400
-4,300
| -40% | -$37.9K |
|
6366
MINISO
MNSO
$3.88B
| $53K | ﹤0.01% |
+9,727
| New | +$60.1K |
|
6367
CALL
Noble Corp
NE
$6.77B
| $53K | ﹤0.01% |
1,800
+700
| +64% | +$20.7K |
|
6368
PUT
Perdoceo Education
PRDO
$1.99B
| $53K | ﹤0.01% |
5,200
-31,000
| -86% | -$370K |
|
6369
Personalis
PSNL
$1.35B
| $53K | ﹤0.01% |
17,957
-2,192
| -11% | -$8.36K |
|
6370
CALL
Simulations Plus
SLP
$369M
| $53K | ﹤0.01% |
+1,100
| New | +$64.2K |
|
|
VBTX
6371
CALL
DELISTED
Veritex Holdings
VBTX
| $53K | ﹤0.01% |
2,000
-29,900
| -94% | -$905K |
|
6372
GeneDx Holdings
WGS
$1.93B
| $53K | ﹤0.01% |
1,859
+652
| +54% | +$29.9K |
|
6373
CALL
WPP
WPP
$4.36B
| $53K | ﹤0.01% |
1,300
+100
| +8% | +$4.69K |
|
6374
CALL
Wave Life Sciences
WVE
$1.09B
| $53K | ﹤0.01% |
14,900
+11,000
| +282% | +$36.4K |
|
|
YALA
6375
PUT
Yalla Group
YALA
$818M
| $53K | ﹤0.01% |
16,400
-15,700
| -49% | -$64.1K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.