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 | |
|---|---|---|---|---|---|---|
1476
CALL
Vail Resorts
MTN
$5.19B
| $3.49M | ﹤0.01% |
16,200
+14,500
| +853% | +$3.3M |
|
1477
PUT
LyondellBasell Industries
LYB
$19.5B
| $3.49M | ﹤0.01% |
46,400
-31,000
| -40% | -$2.62M |
|
1478
CALL
Conagra Brands
CAG
$7.07B
| $3.49M | ﹤0.01% |
106,900
+90,400
| +548% | +$3.1M |
|
1479
PUT
Freshpet
FRPT
$2.83B
| $3.48M | ﹤0.01% |
69,500
-11,300
| -14% | -$533K |
|
1480
CALL
Toll Brothers
TOL
$14B
| $3.48M | ﹤0.01% |
82,900
-4,700
| -5% | -$218K |
|
1481
PUT
Entegris
ENTG
$19.7B
| $3.48M | ﹤0.01% |
41,900
-152,100
| -78% | -$14.9M |
|
1482
CALL
Ambarella
AMBA
$2.99B
| $3.46M | ﹤0.01% |
61,600
-45,400
| -42% | -$3.36M |
|
1483
PUT
Mohawk Industries
MHK
$6.9B
| $3.46M | ﹤0.01% |
37,900
-3,200
| -8% | -$371K |
|
1484
CALL
Vanguard Emerging Markets Government Bond ETF
VWOB
$6.15B
| $3.46M | ﹤0.01% |
37,000
-9,000
| -20% | -$555K |
|
1485
PUT
AB InBev
BUD
$158B
| $3.45M | ﹤0.01% |
76,400
+22,600
| +42% | +$1.17M |
|
1486
CALL
PagSeguro Digital
PAGS
$2.57B
| $3.45M | ﹤0.01% |
260,500
+158,500
| +155% | +$2.12M |
|
1487
PUT
Baxter International
BAX
$11.6B
| $3.44M | ﹤0.01% |
63,900
+46,300
| +263% | +$2.79M |
|
1488
Aehr Test Systems
AEHR
$2.48B
| $3.44M | ﹤0.01% |
+244,023
| New | +$3.28M |
|
1489
PUT
Vanguard Short-Term Treasury ETF
VGSH
$29.3B
| $3.44M | ﹤0.01% |
63,800
+43,600
| +216% | +$2.55M |
|
|
PPLC
1490
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $3.43M | ﹤0.01% |
365,500
+90,100
| +33% | +$845K |
|
1491
PUT
MP Materials
MP
$7.35B
| $3.43M | ﹤0.01% |
125,500
-134,800
| -52% | -$4.41M |
|
|
P
1492
Everpure Inc
P
$24.8B
| $3.42M | ﹤0.01% |
+125,158
| New | +$3.54M |
|
1493
CALL
Fair Isaac
FICO
$28.7B
| $3.42M | ﹤0.01% |
8,300
-15,700
| -65% | -$7.13M |
|
|
BRSL
1494
PUT
Brightstar Lottery PLC
BRSL
$1.91B
| $3.42M | ﹤0.01% |
216,400
-353,500
| -62% | -$6.62M |
|
1495
PUT
Ryder
R
$10.3B
| $3.41M | ﹤0.01% |
45,200
+11,800
| +35% | +$898K |
|
1496
CALL
Ball Corp
BALL
$17B
| $3.41M | ﹤0.01% |
70,600
-60,000
| -46% | -$3.69M |
|
|
ATCO
1497
PUT
DELISTED
Atlas Corp.
ATCO
| $3.41M | ﹤0.01% |
245,400
+198,000
| +418% | +$2.58M |
|
1498
CALL
ResMed
RMD
$28.3B
| $3.4M | ﹤0.01% |
15,600
+6,600
| +73% | +$1.5M |
|
|
OSH
1499
PUT
DELISTED
Oak Street Health, Inc.
OSH
| $3.4M | ﹤0.01% |
138,900
-40,600
| -23% | -$1.07M |
|
|
RXDX
1500
CALL
DELISTED
Prometheus Biosciences, Inc. Common Stock
RXDX
| $3.4M | ﹤0.01% |
57,700
+57,600
| +57,600% | +$2.64M |
|
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.