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 | |
|---|---|---|---|---|---|---|
7176
PUT
Gogoro
GGR
$50.8M
| $27K | ﹤0.01% |
365
+205
| +128% | +$21.9K |
|
7177
Strategy Shares Nasdaq 7HANDL Index ETF
HNDL
$630M
| $27K | ﹤0.01% |
+1,434
| New | +$30.5K |
|
7178
MarineMax
HZO
$759M
| $27K | ﹤0.01% |
936
-7,042
| -88% | -$264K |
|
7179
CALL
iBio
IBIO
$69.5M
| $27K | ﹤0.01% |
324
+29
| +10% | +$3.99K |
|
7180
CALL
Lineage Cell Therapeutics
LCTX
$269M
| $27K | ﹤0.01% |
24,400
+15,800
| +184% | +$23.2K |
|
7181
PUT
Lifestance Health
LFST
$4B
| $27K | ﹤0.01% |
4,200
+2,100
| +100% | +$14.7K |
|
7182
NerdWallet
NRDS
$592M
| $27K | ﹤0.01% |
3,126
-1,696
| -35% | -$16.6K |
|
7183
Outfront Media
OUT
$5.61B
| $27K | ﹤0.01% |
+1,813
| New | +$32K |
|
7184
Portland General Electric
POR
$5.71B
| $27K | ﹤0.01% |
+626
| New | +$32K |
|
|
PRO
7185
CALL
DELISTED
PROS Holdings
PRO
| $27K | ﹤0.01% |
+1,100
| New | +$26.7K |
|
7186
PUT
Qualys
QLYS
$5.1B
| $27K | ﹤0.01% |
200
-200
| -50% | -$28.2K |
|
7187
Revolution Medicines
RVMD
$39.9B
| $27K | ﹤0.01% |
1,391
+1,340
| +2,627% | +$29.4K |
|
7188
CALL
Sana Biotechnology
SANA
$871M
| $27K | ﹤0.01% |
4,500
+2,100
| +88% | +$15.2K |
|
7189
CALL
SGHC Ltd
SGHC
$7.11B
| $27K | ﹤0.01% |
6,700
-13,600
| -67% | -$59.6K |
|
7190
PUT
Sotera Health
SHC
$5.09B
| $27K | ﹤0.01% |
+4,000
| New | +$66.5K |
|
7191
SK Telecom
SKM
$12.1B
| $27K | ﹤0.01% |
+1,424
| New | +$30.8K |
|
7192
PUT
SLM Corp
SLM
$4.89B
| $27K | ﹤0.01% |
2,000
+600
| +43% | +$9.3K |
|
7193
CALL
SPX Corp
SPXC
$11B
| $27K | ﹤0.01% |
+500
| New | +$28.6K |
|
|
NSLR
7194
CALL
Neostellar Capital Corp
NSLR
$269M
| $27K | ﹤0.01% |
7,200
-4,600
| -39% | -$28.1K |
|
7195
PUT
Southwest Gas
SWX
$6.47B
| $27K | ﹤0.01% |
400
+100
| +33% | +$8.11K |
|
7196
PUT
TFI International
TFII
$11.1B
| $27K | ﹤0.01% |
300
+100
| +50% | +$9.7K |
|
7197
PUT
Frontier Group Holdings
ULCC
$1.55B
| $27K | ﹤0.01% |
2,800
-63,400
| -96% | -$778K |
|
7198
Energous
WATT
$77.6M
| $27K | ﹤0.01% |
44
-13
| -23% | -$9.41K |
|
|
YMAB
7199
DELISTED
Y-mAbs Therapeutics
YMAB
| $27K | ﹤0.01% |
1,880
+1,348
| +253% | +$22.3K |
|
|
VOXX
7200
CALL
DELISTED
VOXX International Corporation Class A
VOXX
| $27K | ﹤0.01% |
3,600
+2,500
| +227% | +$21.5K |
|
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.