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 | |
|---|---|---|---|---|---|---|
1651
CALL
Thor Industries
THO
$3.99B
| $2.89M | ﹤0.01% |
41,300
+18,800
| +84% | +$1.54M |
|
1652
PUT
Amylyx Pharmaceuticals
AMLX
$2.05B
| $2.88M | ﹤0.01% |
102,500
+96,900
| +1,730% | +$2.42M |
|
1653
Danaher
DHR
$135B
| $2.88M | ﹤0.01% |
+12,596
| New | +$3.08M |
|
|
TELL
1654
CALL
DELISTED
Tellurian Inc.
TELL
| $2.88M | ﹤0.01% |
1,206,200
+331,700
| +38% | +$1.2M |
|
1655
CALL
Concentrix
CNXC
$1.36B
| $2.88M | ﹤0.01% |
25,800
+1,000
| +4% | +$128K |
|
1656
CALL
Bio-Rad Laboratories Class A
BIO
$8.42B
| $2.88M | ﹤0.01% |
6,900
-2,200
| -24% | -$1.1M |
|
1657
PUT
XPO
XPO
$25B
| $2.88M | ﹤0.01% |
108,722
-4,207
| -4% | -$131K |
|
1658
PUT
Maximus
MMS
$3.14B
| $2.87M | ﹤0.01% |
49,600
+31,500
| +174% | +$1.96M |
|
1659
CALL
Clearway Energy Class C
CWEN
$5B
| $2.86M | ﹤0.01% |
90,100
-8,200
| -8% | -$302K |
|
|
CPE
1660
DELISTED
Callon Petroleum Company
CPE
| $2.85M | ﹤0.01% |
81,513
+31,761
| +64% | +$1.27M |
|
1661
State Street SPDR Bloomberg 1-3 Month T-Bill ETF
BIL
$46.8B
| $2.85M | ﹤0.01% |
31,120
-3,100
| -9% | -$284K |
|
1662
PUT
Universal Display
OLED
$3.71B
| $2.85M | ﹤0.01% |
30,200
+16,900
| +127% | +$1.87M |
|
1663
CALL
HF Sinclair
DINO
$15.9B
| $2.85M | ﹤0.01% |
52,900
+14,000
| +36% | +$692K |
|
1664
CALL
OSI Systems
OSIS
$3.57B
| $2.85M | ﹤0.01% |
39,500
+37,500
| +1,875% | +$3.28M |
|
|
ONEM
1665
CALL
DELISTED
1Life Healthcare
ONEM
| $2.85M | ﹤0.01% |
166,000
-55,500
| -25% | -$871K |
|
1666
PUT
Ecolab
ECL
$75.6B
| $2.85M | ﹤0.01% |
19,700
+11,300
| +135% | +$1.83M |
|
1667
PUT
Coherent
COHR
$55.2B
| $2.84M | ﹤0.01% |
81,600
-5,600
| -6% | -$268K |
|
1668
CALL
Nice
NICE
$5.29B
| $2.84M | ﹤0.01% |
15,100
+8,000
| +113% | +$1.67M |
|
|
DAY
1669
PUT
DELISTED
Dayforce
DAY
| $2.83M | ﹤0.01% |
50,700
+29,700
| +141% | +$1.73M |
|
1670
PUT
Nu Skin
NUS
$247M
| $2.82M | ﹤0.01% |
84,600
+84,000
| +14,000% | +$3.5M |
|
|
SIVB
1671
CALL
DELISTED
SVB Financial Group
SIVB
| $2.82M | ﹤0.01% |
8,400
+800
| +11% | +$322K |
|
1672
Sea Limited
SE
$61.2B
| $2.82M | ﹤0.01% |
50,298
+49,198
| +4,473% | +$3.42M |
|
1673
CALL
Manulife Financial
MFC
$72.6B
| $2.81M | ﹤0.01% |
179,500
+13,300
| +8% | +$233K |
|
|
FTCH
1674
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $2.81M | ﹤0.01% |
376,791
+278,848
| +285% | +$2.48M |
|
1675
CALL
StoneCo
STNE
$2.62B
| $2.8M | ﹤0.01% |
294,300
+126,200
| +75% | +$1.21M |
|
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.