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 | |
|---|---|---|---|---|---|---|
|
KRTX
2176
DELISTED
Karuna Therapeutics, Inc. Common Stock
KRTX
| $1.59M | ﹤0.01% |
7,058
+6,908
| +4,605% | +$1.4M |
|
|
PBT
2177
Permian Basin Royalty Trust
PBT
$1.36B
| $1.58M | ﹤0.01% |
97,113
+19,864
| +26% | +$346K |
|
2178
Vanguard S&P 500 Growth ETF
VOOG
$25.4B
| $1.58M | ﹤0.01% |
45,600
+5,994
| +15% | +$234K |
|
|
DENT
2179
PUT
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $1.58M | ﹤0.01% |
158,600
+73,900
| +87% | +$738K |
|
|
BRSL
2180
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $1.58M | ﹤0.01% |
100,200
-206,800
| -67% | -$3.87M |
|
2181
PUT
Papa John's
PZZA
$999M
| $1.58M | ﹤0.01% |
22,600
+16,200
| +253% | +$1.37M |
|
2182
Nu Skin
NUS
$247M
| $1.58M | ﹤0.01% |
+47,362
| New | +$1.97M |
|
|
SQSP
2183
CALL
DELISTED
Squarespace, Inc.
SQSP
| $1.58M | ﹤0.01% |
74,000
+14,500
| +24% | +$316K |
|
2184
CALL
AMN Healthcare
AMN
$1.28B
| $1.58M | ﹤0.01% |
14,900
+4,400
| +42% | +$482K |
|
2185
PUT
Sun Life Financial
SLF
$45.6B
| $1.58M | ﹤0.01% |
39,700
-11,800
| -23% | -$529K |
|
2186
PUT
GitLab
GTLB
$5.28B
| $1.58M | ﹤0.01% |
30,800
+15,300
| +99% | +$893K |
|
2187
PUT
Blue Owl Capital
OWL
$6.39B
| $1.58M | ﹤0.01% |
170,900
-308,900
| -64% | -$3.43M |
|
2188
American Homes 4 Rent
AMH
$12B
| $1.57M | ﹤0.01% |
+47,883
| New | +$1.73M |
|
2189
CALL
Equinox Gold
EQX
$7.32B
| $1.57M | ﹤0.01% |
430,300
+53,500
| +14% | +$208K |
|
|
PBFX
2190
CALL
DELISTED
PBF LOGISTICS LP
PBFX
| $1.57M | ﹤0.01% |
83,100
-96,400
| -54% | -$1.71M |
|
|
MAXN
2191
CALL
DELISTED
Maxeon Solar Technologies
MAXN
| $1.57M | ﹤0.01% |
660
-234
| -26% | -$432K |
|
2192
PUT
Sundial Growers
SNDL
$325M
| $1.57M | ﹤0.01% |
719,700
+638,630
| +788% | +$1.78M |
|
2193
CALL
Xometry
XMTR
$4.77B
| $1.57M | ﹤0.01% |
27,600
+17,900
| +185% | +$836K |
|
2194
PUT
Anavex Life Sciences
AVXL
$222M
| $1.56M | ﹤0.01% |
151,500
+16,200
| +12% | +$171K |
|
2195
PUT
Cal-Maine
CALM
$4.28B
| $1.56M | ﹤0.01% |
28,100
+18,300
| +187% | +$1M |
|
2196
CALL
Petco
WOOF
$745M
| $1.56M | ﹤0.01% |
139,900
-41,500
| -23% | -$606K |
|
2197
CALL
Marqeta
MQ
$1.8B
| $1.56M | ﹤0.01% |
54,800
-6,725
| -11% | -$224K |
|
2198
CALL
Darling Ingredients
DAR
$9.93B
| $1.55M | ﹤0.01% |
23,500
-1,800
| -7% | -$126K |
|
2199
Landstar System
LSTR
$6.8B
| $1.55M | ﹤0.01% |
10,746
+10,738
| +134,225% | +$1.6M |
|
2200
CALL
ADT
ADT
$5.16B
| $1.55M | ﹤0.01% |
207,000
+155,700
| +304% | +$1.17M |
|
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.