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 | |
|---|---|---|---|---|---|---|
|
BLD
7726
CALL
DELISTED
TopBuild
BLD
| $16K | ﹤0.01% |
100
| – | – |
|
7727
Bassett Furniture
BSET
$168M
| $16K | ﹤0.01% |
+1,047
| New | +$21K |
|
7728
CBAK Energy Technology Ltd
CBAT
$43.9M
| $16K | ﹤0.01% |
14,163
-8,154
| -37% | -$10.5K |
|
7729
Invesco S&P Global Water Index ETF
CGW
$1.05B
| $16K | ﹤0.01% |
409
-76
| -16% | -$3.52K |
|
7730
PUT
CONMED
CNMD
$1.41B
| $16K | ﹤0.01% |
+200
| New | +$18.9K |
|
7731
Direxion Auspice Broad Commodity Strategy ETF
COM
$205M
| $16K | ﹤0.01% |
569
-1,868
| -77% | -$56.3K |
|
7732
PUT
CubeSmart
CUBE
$9.34B
| $16K | ﹤0.01% |
400
-2,100
| -84% | -$94.6K |
|
7733
PUT
Endava
DAVA
$153M
| $16K | ﹤0.01% |
200
| – | – |
|
|
EARN
7734
PUT
Ellington Residential Mortgage REIT
EARN
$168M
| $16K | ﹤0.01% |
2,700
-1,200
| -31% | -$9.56K |
|
7735
PUT
Encompass Health
EHC
$11B
| $16K | ﹤0.01% |
2,100
-791
| -27% | -$39.6K |
|
7736
Evolus
EOLS
$396M
| $16K | ﹤0.01% |
2,051
-11,215
| -85% | -$119K |
|
7737
Equillium
EQ
$147M
| $16K | ﹤0.01% |
7,484
+6,797
| +989% | +$16.2K |
|
7738
CALL
Establishment Labs
ESTA
$2.75B
| $16K | ﹤0.01% |
300
-7,000
| -96% | -$418K |
|
7739
PUT
Evercore
EVR
$12.1B
| $16K | ﹤0.01% |
200
-26,300
| -99% | -$2.49M |
|
7740
PUT
Future Fuel
FF
$218M
| $16K | ﹤0.01% |
2,800
-3,200
| -53% | -$22.1K |
|
7741
CALL
Federated Hermes
FHI
$4.51B
| $16K | ﹤0.01% |
500
-800
| -62% | -$27.3K |
|
7742
CALL
Gaia
GAIA
$46.8M
| $16K | ﹤0.01% |
6,700
-3,800
| -36% | -$13.3K |
|
7743
PUT
Gladstone Capital
GLAD
$426M
| $16K | ﹤0.01% |
1,000
-250
| -20% | -$5.09K |
|
7744
PUT
Howard Hughes
HHH
$3.87B
| $16K | ﹤0.01% |
315
-105
| -25% | -$6.72K |
|
7745
PUT
Horizon Technology Finance
HRZN
$300M
| $16K | ﹤0.01% |
1,600
+500
| +45% | +$6.15K |
|
7746
iShares Genomics Immunology and Healthcare ETF
IDNA
$193M
| $16K | ﹤0.01% |
643
+500
| +350% | +$15.4K |
|
|
IMMP
7747
Immutep
IMMP
$56M
| $16K | ﹤0.01% |
10,878
-13,511
| -55% | -$27.5K |
|
7748
Immunome
IMNM
$2.61B
| $16K | ﹤0.01% |
3,642
+1,679
| +86% | +$7.87K |
|
7749
CALL
Invivyd
IVVD
$171M
| $16K | ﹤0.01% |
5,200
-500
| -9% | -$2K |
|
7750
Everspin Technologies
MRAM
$339M
| $16K | ﹤0.01% |
2,786
+477
| +21% | +$3.04K |
|
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.