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 | |
|---|---|---|---|---|---|---|
1351
CALL
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $4.03M | ﹤0.01% |
478,100
-52,900
| -10% | -$489K |
|
|
CFLT
1352
CALL
DELISTED
Confluent
CFLT
| $4M | ﹤0.01% |
168,500
-39,500
| -19% | -$1.06M |
|
1353
Guardant Health
GH
$19.5B
| $4M | ﹤0.01% |
74,317
+53,451
| +256% | +$2.74M |
|
1354
PUT
Allstate
ALL
$66.9B
| $4M | ﹤0.01% |
32,100
+13,200
| +70% | +$1.64M |
|
|
CTRA
1355
CALL
DELISTED
Coterra Energy
CTRA
| $3.99M | ﹤0.01% |
152,800
-139,400
| -48% | -$3.99M |
|
1356
PUT
Dave & Buster's
PLAY
$343M
| $3.99M | ﹤0.01% |
128,600
-2,600
| -2% | -$97.2K |
|
1357
PUT
Goodyear
GT
$2.07B
| $3.99M | ﹤0.01% |
395,200
-92,400
| -19% | -$1.17M |
|
1358
PUT
KB Home
KBH
$3.48B
| $3.98M | ﹤0.01% |
153,400
-95,600
| -38% | -$2.87M |
|
1359
CALL
Canadian Imperial Bank of Commerce
CM
$107B
| $3.97M | ﹤0.01% |
90,800
+400
| +0.4% | +$19.5K |
|
1360
CALL
Ally Financial
ALLY
$13.1B
| $3.97M | ﹤0.01% |
142,700
+21,000
| +17% | +$697K |
|
1361
PUT
Bank of Montreal
BMO
$125B
| $3.97M | ﹤0.01% |
45,300
-26,500
| -37% | -$2.56M |
|
1362
PUT
Stellantis
STLA
$16.5B
| $3.97M | ﹤0.01% |
335,300
+149,100
| +80% | +$2M |
|
1363
CALL
PureCycle Technologies
PCT
$1.17B
| $3.97M | ﹤0.01% |
491,500
+266,800
| +119% | +$2.28M |
|
1364
PUT
Asana
ASAN
$1.58B
| $3.96M | ﹤0.01% |
178,100
-63,800
| -26% | -$1.37M |
|
|
BBBY
1365
PUT
Bed Bath & Beyond
BBBY
$473M
| $3.96M | ﹤0.01% |
178,860
-16,610
| -8% | -$416K |
|
1366
Direxion Daily Small Cap Bull 3x ETF
TNA
$1.34B
| $3.96M | ﹤0.01% |
+137,417
| New | +$5.51M |
|
1367
iShares Russell 2000 Value ETF
IWN
$14.4B
| $3.96M | ﹤0.01% |
+30,692
| New | +$4.44M |
|
1368
CALL
Western Midstream Partners
WES
$19.6B
| $3.96M | ﹤0.01% |
157,200
+87,700
| +126% | +$2.34M |
|
1369
PUT
Applovin
APP
$132B
| $3.95M | ﹤0.01% |
202,900
+14,400
| +8% | +$430K |
|
|
1370
CALL
Guardant Health
GH
$19.5B
| $3.95M | ﹤0.01% |
73,400
-44,500
| -38% | -$2.28M |
|
1371
PUT
Toll Brothers
TOL
$14B
| $3.95M | ﹤0.01% |
94,000
+51,000
| +119% | +$2.36M |
|
1372
PUT
Check Point Software Technologies
CHKP
$13.3B
| $3.94M | ﹤0.01% |
35,200
+28,800
| +450% | +$3.48M |
|
1373
CALL
Dynatrace
DT
$12.1B
| $3.94M | ﹤0.01% |
113,200
-24,700
| -18% | -$955K |
|
|
AKRO
1374
PUT
DELISTED
Akero Therapeutics
AKRO
| $3.93M | ﹤0.01% |
115,400
+110,600
| +2,304% | +$1.69M |
|
1375
CALL
Shake Shack
SHAK
$2.3B
| $3.93M | ﹤0.01% |
87,300
+1,500
| +2% | +$72K |
|
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.