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 | |
|---|---|---|---|---|---|---|
2126
CALL
Gevo
GEVO
$397M
| $1.66M | ﹤0.01% |
727,800
+62,900
| +9% | +$175K |
|
2127
Valmont Industries
VMI
$9.44B
| $1.66M | ﹤0.01% |
+6,179
| New | +$1.63M |
|
2128
PUT
Cognex
CGNX
$10.3B
| $1.66M | ﹤0.01% |
40,000
+16,900
| +73% | +$765K |
|
2129
CALL
Yeti Holdings
YETI
$3.82B
| $1.65M | ﹤0.01% |
58,000
-7,600
| -12% | -$317K |
|
2130
CALL
Welltower
WELL
$178B
| $1.65M | ﹤0.01% |
25,700
-96,000
| -79% | -$7.5M |
|
|
PLL
2131
PUT
DELISTED
Piedmont Lithium
PLL
| $1.65M | ﹤0.01% |
30,900
+25,800
| +506% | +$1.33M |
|
2132
CALL
Cirrus Logic
CRUS
$6.74B
| $1.65M | ﹤0.01% |
24,000
+14,900
| +164% | +$1.17M |
|
2133
PUT
Snap-on
SNA
$20.9B
| $1.65M | ﹤0.01% |
8,200
+6,700
| +447% | +$1.44M |
|
2134
PUT
Acadia Pharmaceuticals
ACAD
$4.25B
| $1.65M | ﹤0.01% |
100,700
+12,000
| +14% | +$194K |
|
2135
PUT
W.P. Carey
WPC
$17.1B
| $1.65M | ﹤0.01% |
24,096
+11,129
| +86% | +$911K |
|
2136
Phillips Edison & Co
PECO
$5.48B
| $1.65M | ﹤0.01% |
+58,701
| New | +$1.93M |
|
|
COWN
2137
CALL
DELISTED
Cowen Inc. Class A Common Stock
COWN
| $1.65M | ﹤0.01% |
42,600
-7,900
| -16% | -$287K |
|
|
ATVI
2138
DELISTED
Activision Blizzard
ATVI
| $1.64M | ﹤0.01% |
22,121
-209,849
| -90% | -$16.4M |
|
2139
CALL
Monster Beverage
MNST
$91.4B
| $1.64M | ﹤0.01% |
37,800
+3,600
| +11% | +$166K |
|
2140
Stryker
SYK
$127B
| $1.64M | ﹤0.01% |
+8,115
| New | +$1.71M |
|
2141
PUT
Tradeweb Markets
TW
$21.3B
| $1.64M | ﹤0.01% |
29,100
-48,400
| -62% | -$3.29M |
|
2142
PUT
Clarus
CLAR
$125M
| $1.64M | ﹤0.01% |
121,800
+121,400
| +30,350% | +$2.36M |
|
2143
CALL
Samsara
IOT
$19.3B
| $1.64M | ﹤0.01% |
135,900
+59,400
| +78% | +$841K |
|
2144
CALL
DaVita
DVA
$15.1B
| $1.64M | ﹤0.01% |
19,800
-1,900
| -9% | -$167K |
|
2145
PUT
IDEX
IEX
$16.5B
| $1.64M | ﹤0.01% |
8,200
-1,000
| -11% | -$202K |
|
2146
PUT
ScottsMiracle-Gro
SMG
$4.03B
| $1.64M | ﹤0.01% |
38,300
-9,700
| -20% | -$696K |
|
2147
CALL
Motorola Solutions
MSI
$69.4B
| $1.63M | ﹤0.01% |
7,300
-32,200
| -82% | -$7.6M |
|
2148
PUT
Tilray
TLRY
$479M
| $1.63M | ﹤0.01% |
59,340
-35,410
| -37% | -$1.24M |
|
2149
PUT
IQVIA
IQV
$34.7B
| $1.63M | ﹤0.01% |
9,000
-1,400
| -13% | -$307K |
|
2150
Vanguard Russell 2000 Growth ETF
VTWG
$1.47B
| $1.63M | ﹤0.01% |
10,836
-25,964
| -71% | -$4.25M |
|
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.