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 | |
|---|---|---|---|---|---|---|
|
CHNG
2276
DELISTED
Change Healthcare Inc. Common Stock
CHNG
| $1.44M | ﹤0.01% |
52,419
+15,768
| +43% | +$391K |
|
2277
CALL
AbCellera Biologics
ABCL
$1.64B
| $1.44M | ﹤0.01% |
145,300
+102,000
| +236% | +$1.12M |
|
2278
PUT
Viatris
VTRS
$20.5B
| $1.44M | ﹤0.01% |
168,700
| – | – |
|
2279
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$268M
| $1.43M | ﹤0.01% |
26,100
-42,900
| -62% | -$2.07M |
|
2280
Prothena Corp
PRTA
$463M
| $1.43M | ﹤0.01% |
23,666
+20,435
| +632% | +$646K |
|
2281
PUT
Opendoor
OPEN
$3.74B
| $1.43M | ﹤0.01% |
476,367
+124,827
| +36% | +$573K |
|
2282
PUT
United Natural Foods
UNFI
$3B
| $1.43M | ﹤0.01% |
41,700
+7,600
| +22% | +$324K |
|
2283
PUT
Sweetgreen
SG
$738M
| $1.43M | ﹤0.01% |
77,200
-7,700
| -9% | -$131K |
|
2284
Sonoco
SON
$5.79B
| $1.43M | ﹤0.01% |
25,170
-6,297
| -20% | -$387K |
|
2285
CALL
ARS Pharmaceuticals
SPRY
$574M
| $1.43M | ﹤0.01% |
270,300
+11,800
| +5% | +$58.1K |
|
2286
CALL
Alliance Resource Partners
ARLP
$3.22B
| $1.42M | ﹤0.01% |
62,200
+18,600
| +43% | +$426K |
|
2287
M&T Bank
MTB
$36.3B
| $1.42M | ﹤0.01% |
+8,072
| New | +$1.43M |
|
2288
CALL
Winnebago Industries
WGO
$883M
| $1.42M | ﹤0.01% |
26,700
-3,300
| -11% | -$192K |
|
2289
CALL
Vista Energy
VIST
$7.57B
| $1.42M | ﹤0.01% |
150,700
-20,300
| -12% | -$174K |
|
|
SBNY
2290
CALL
DELISTED
Signature Bank
SBNY
| $1.42M | ﹤0.01% |
9,400
+600
| +7% | +$109K |
|
2291
CALL
Duolingo
DUOL
$5.93B
| $1.42M | ﹤0.01% |
14,900
+8,800
| +144% | +$857K |
|
2292
CALL
Molina Healthcare
MOH
$10.6B
| $1.42M | ﹤0.01% |
4,300
+1,100
| +34% | +$354K |
|
2293
CALL
Target Hospitality
TH
$1.59B
| $1.42M | ﹤0.01% |
112,400
+92,100
| +454% | +$1.15M |
|
2294
FuelCell Energy
FCEL
$1.7B
| $1.41M | ﹤0.01% |
13,827
+9,225
| +200% | +$1.1M |
|
2295
PUT
Teradata
TDC
$2.8B
| $1.41M | ﹤0.01% |
45,300
+31,300
| +224% | +$1.09M |
|
2296
PUT
Virtu Financial
VIRT
$5.13B
| $1.41M | ﹤0.01% |
67,700
+34,100
| +101% | +$782K |
|
2297
Philip Morris
PM
$303B
| $1.4M | ﹤0.01% |
+16,923
| New | +$1.61M |
|
|
RCM
2298
CALL
DELISTED
R1 RCM Inc. Common Stock
RCM
| $1.4M | ﹤0.01% |
75,800
+72,800
| +2,427% | +$1.66M |
|
2299
CALL
TechnipFMC
FTI
$30B
| $1.4M | ﹤0.01% |
165,800
+47,400
| +40% | +$374K |
|
|
MCW
2300
CALL
DELISTED
Mister Car Wash
MCW
| $1.4M | ﹤0.01% |
163,400
+101,800
| +165% | +$1.09M |
|
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.