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 | |
|---|---|---|---|---|---|---|
1601
CALL
Inspire Medical Systems
INSP
$1.42B
| $3.03M | ﹤0.01% |
17,100
+7,400
| +76% | +$1.49M |
|
1602
CALL
Ericsson
ERIC
$30.7B
| $3.03M | ﹤0.01% |
528,200
-91,700
| -15% | -$657K |
|
1603
Cboe Global Markets
CBOE
$29.8B
| $3.03M | ﹤0.01% |
25,791
+21,286
| +472% | +$2.56M |
|
1604
CALL
nCino
NCNO
$1.81B
| $3.02M | ﹤0.01% |
88,700
+30,900
| +53% | +$1.04M |
|
|
CFLT
1605
PUT
DELISTED
Confluent
CFLT
| $3.02M | ﹤0.01% |
127,200
+65,600
| +106% | +$1.77M |
|
|
Y
1606
PUT
DELISTED
Alleghany Corp
Y
| $3.02M | ﹤0.01% |
3,600
-1,800
| -33% | -$1.51M |
|
|
BERY
1607
DELISTED
Berry Global Group, Inc.
BERY
| $3.02M | ﹤0.01% |
+70,639
| New | +$3.55M |
|
1608
PUT
Westlake Corp
WLK
$9.46B
| $3.01M | ﹤0.01% |
34,700
+300
| +0.9% | +$28.8K |
|
1609
3M
MMM
$89B
| $3.01M | ﹤0.01% |
+32,610
| New | +$3.58M |
|
1610
CALL
Alpha Metallurgical Resources
AMR
$1.82B
| $3.01M | ﹤0.01% |
22,000
-21,700
| -50% | -$3.02M |
|
1611
PUT
Oneok
OKE
$58.7B
| $3.01M | ﹤0.01% |
58,700
+28,200
| +92% | +$1.68M |
|
1612
CALL
Rocket Companies
RKT
$36.9B
| $3.01M | ﹤0.01% |
475,900
-42,000
| -8% | -$365K |
|
1613
Infosys
INFY
$45B
| $3M | ﹤0.01% |
177,046
+102,710
| +138% | +$1.92M |
|
|
MRTX
1614
PUT
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $3M | ﹤0.01% |
43,000
+39,700
| +1,203% | +$2.94M |
|
1615
PUT
Altimmune
ALT
$539M
| $3M | ﹤0.01% |
234,800
+223,000
| +1,890% | +$3.29M |
|
1616
PUT
Liberty Media Series A
FWONA
$22.3B
| $3M | ﹤0.01% |
83,140
+59,535
| +252% | +$3.32M |
|
1617
PUT
Southern Copper
SCCO
$141B
| $3M | ﹤0.01% |
72,058
+54,259
| +305% | +$2.4M |
|
|
FSR
1618
DELISTED
Fisker Inc.
FSR
| $2.99M | ﹤0.01% |
+396,427
| New | +$3.58M |
|
1619
PUT
Everest Group
EG
$15.2B
| $2.99M | ﹤0.01% |
11,400
+5,000
| +78% | +$1.35M |
|
1620
CALL
Labcorp
LH
$24.3B
| $2.99M | ﹤0.01% |
16,994
+8,846
| +109% | +$1.81M |
|
|
BBBY
1621
CALL
Bed Bath & Beyond
BBBY
$473M
| $2.98M | ﹤0.01% |
134,860
-52,250
| -28% | -$1.31M |
|
1622
State Street SPDR EURO STOXX 50 ETF
FEZ
$4.28B
| $2.98M | ﹤0.01% |
+97,024
| New | +$3.34M |
|
1623
PUT
Huntsman Corp
HUN
$2.24B
| $2.97M | ﹤0.01% |
121,100
+86,500
| +250% | +$2.43M |
|
|
FL
1624
CALL
DELISTED
Foot Locker
FL
| $2.97M | ﹤0.01% |
95,400
+19,700
| +26% | +$629K |
|
1625
PUT
Louisiana-Pacific
LPX
$5.2B
| $2.96M | ﹤0.01% |
57,900
-108,200
| -65% | -$6.15M |
|
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.