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 | |
|---|---|---|---|---|---|---|
1501
CALL
Whirlpool
WHR
$2.42B
| $3.4M | ﹤0.01% |
25,200
-1,300
| -5% | -$207K |
|
1502
CALL
Johnson Controls International
JCI
$87.5B
| $3.4M | ﹤0.01% |
69,000
+13,200
| +24% | +$700K |
|
|
GTM
1503
CALL
ZoomInfo Technologies
GTM
$861M
| $3.4M | ﹤0.01% |
81,500
-29,400
| -27% | -$1.25M |
|
1504
PUT
AES
AES
$10.6B
| $3.39M | ﹤0.01% |
150,200
+122,300
| +438% | +$2.9M |
|
1505
PUT
Virgin Galactic
SPCE
$320M
| $3.39M | ﹤0.01% |
35,985
+16,910
| +89% | +$2.17M |
|
1506
PUT
dLocal
DLO
$4.26B
| $3.39M | ﹤0.01% |
165,100
+116,800
| +242% | +$3.1M |
|
1507
PUT
Mid-America Apartment Communities
MAA
$15.6B
| $3.38M | ﹤0.01% |
21,800
+8,900
| +69% | +$1.53M |
|
1508
Seagate
STX
$193B
| $3.38M | ﹤0.01% |
63,482
+25,403
| +67% | +$1.84M |
|
1509
CALL
Cognex
CGNX
$10.3B
| $3.38M | ﹤0.01% |
81,500
+76,100
| +1,409% | +$3.45M |
|
1510
CALL
Sonos
SONO
$1.75B
| $3.38M | ﹤0.01% |
243,000
+105,700
| +77% | +$1.88M |
|
1511
PUT
Agios Pharmaceuticals
AGIO
$2.16B
| $3.38M | ﹤0.01% |
119,400
+80,700
| +209% | +$2.16M |
|
1512
PUT
Pool Corp
POOL
$6.7B
| $3.37M | ﹤0.01% |
10,600
+8,500
| +405% | +$3.03M |
|
1513
PUT
Chemours
CC
$2.59B
| $3.37M | ﹤0.01% |
136,800
-3,100
| -2% | -$102K |
|
1514
Fair Isaac
FICO
$28.7B
| $3.37M | ﹤0.01% |
+8,182
| New | +$3.71M |
|
1515
PUT
GDS Holdings
GDS
$6.34B
| $3.36M | ﹤0.01% |
190,100
+61,300
| +48% | +$1.61M |
|
|
CNR
1516
PUT
Core Natural Resources Inc
CNR
$4.19B
| $3.35M | ﹤0.01% |
52,100
+6,200
| +14% | +$393K |
|
1517
Cencora
COR
$60.3B
| $3.34M | ﹤0.01% |
24,678
-796
| -3% | -$114K |
|
1518
PUT
Fomento Económico Mexicano
FMX
$43.3B
| $3.33M | ﹤0.01% |
53,000
+33,100
| +166% | +$2.09M |
|
|
CGC
1519
CALL
Canopy Growth
CGC
$375M
| $3.32M | ﹤0.01% |
121,750
-10,220
| -8% | -$315K |
|
1520
PUT
TripAdvisor
TRIP
$1.59B
| $3.32M | ﹤0.01% |
150,500
+19,200
| +15% | +$430K |
|
1521
PUT
Watsco Inc
WSO
$14.9B
| $3.32M | ﹤0.01% |
12,900
-19,800
| -61% | -$5.37M |
|
1522
PUT
Stanley Black & Decker
SWK
$14.2B
| $3.29M | ﹤0.01% |
43,800
-21,400
| -33% | -$2.06M |
|
|
VSTO
1523
DELISTED
Vista Outdoor Inc.
VSTO
| $3.29M | ﹤0.01% |
135,203
+82,349
| +156% | +$2.34M |
|
1524
Amylyx Pharmaceuticals
AMLX
$2.05B
| $3.28M | ﹤0.01% |
116,604
-41,486
| -26% | -$1.04M |
|
1525
CALL
Envista
NVST
$4.28B
| $3.27M | ﹤0.01% |
99,800
+96,100
| +2,597% | +$3.64M |
|
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.