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 | |
|---|---|---|---|---|---|---|
7051
PUT
ACV Auctions
ACVA
$1.31B
| $30K | ﹤0.01% |
4,200
-31,000
| -88% | -$246K |
|
|
AMWD
7052
DELISTED
American Woodmark
AMWD
| $30K | ﹤0.01% |
688
-3,021
| -81% | -$147K |
|
7053
PUT
Actinium Pharmaceuticals
ATNM
$26.3M
| $30K | ﹤0.01% |
4,100
-1,800
| -31% | -$11.2K |
|
7054
Concrete Pumping Holdings
BBCP
$490M
| $30K | ﹤0.01% |
4,740
-10,282
| -68% | -$69K |
|
7055
PUT
Cathay General Bancorp
CATY
$4.22B
| $30K | ﹤0.01% |
800
-300
| -27% | -$12.5K |
|
7056
CALL
CBAK Energy Technology Ltd
CBAT
$44.3M
| $30K | ﹤0.01% |
26,100
-43,300
| -62% | -$55.5K |
|
7057
PUT
CPS Technologies
CPSH
$75.5M
| $30K | ﹤0.01% |
10,800
-4,000
| -27% | -$13.6K |
|
7058
CALL
Crescent Energy
CRGY
$3.79B
| $30K | ﹤0.01% |
+2,300
| New | +$33.7K |
|
7059
CALL
CorMedix
CRMD
$591M
| $30K | ﹤0.01% |
10,700
-10,500
| -50% | -$43.7K |
|
7060
PUT
Corvus Pharmaceuticals
CRVS
$1.12B
| $30K | ﹤0.01% |
36,900
+24,100
| +188% | +$23K |
|
|
DRRX
7061
CALL
DELISTED
DURECT Corp
DRRX
| $30K | ﹤0.01% |
5,200
-1,490
| -22% | -$9.08K |
|
7062
Precision BioSciences
DTIL
$180M
| $30K | ﹤0.01% |
792
+252
| +47% | +$12K |
|
7063
PUT
Destination XL Group
DXLG
$31.2M
| $30K | ﹤0.01% |
5,600
+2,700
| +93% | +$12.9K |
|
7064
Fate Therapeutics
FATE
$286M
| $30K | ﹤0.01% |
1,365
+1,192
| +689% | +$34.4K |
|
|
FENG
7065
CALL
Phoenix New Media
FENG
$17.7M
| $30K | ﹤0.01% |
6,500
+1,700
| +35% | +$8.37K |
|
7066
Fidelity MSCI Real Estate Index ETF
FREL
$1.5B
| $30K | ﹤0.01% |
+1,262
| New | +$35.2K |
|
7067
CALL
Heartland Express
HTLD
$948M
| $30K | ﹤0.01% |
2,100
+1,800
| +600% | +$27K |
|
7068
PUT
Lexicon Pharmaceuticals
LXRX
$1.03B
| $30K | ﹤0.01% |
12,600
+9,800
| +350% | +$27.1K |
|
7069
Momentus
MNTS
$76.3M
| $30K | ﹤0.01% |
+2
| New | +$46.3K |
|
|
MREO
7070
CALL
Mereo BioPharma
MREO
$54.7M
| $30K | ﹤0.01% |
35,600
+18,300
| +106% | +$22.4K |
|
7071
PUT
Microvast
MVST
$269M
| $30K | ﹤0.01% |
16,900
+11,900
| +238% | +$28.4K |
|
7072
CALL
NewMarket
NEU
$7.82B
| $30K | ﹤0.01% |
100
-8,500
| -99% | -$2.55M |
|
7073
PUT
Oramed Pharmaceuticals
ORMP
$167M
| $30K | ﹤0.01% |
4,700
+4,200
| +840% | +$34K |
|
7074
CALL
PAVmed
PAVM
$35.4M
| $30K | ﹤0.01% |
79
+66
| +508% | +$37.4K |
|
7075
PUT
PennantPark Floating Rate Capital
PFLT
$689M
| $30K | ﹤0.01% |
3,200
+100
| +3% | +$1.2K |
|
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.