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 | |
|---|---|---|---|---|---|---|
|
TWO
2051
CALL
Two Harbors Investment
TWO
$1.27B
| $1.81M | ﹤0.01% |
136,400
+89,950
| +194% | +$1.75M |
|
|
LTHM
2052
PUT
DELISTED
Livent Corporation
LTHM
| $1.81M | ﹤0.01% |
59,100
+2,200
| +4% | +$61.7K |
|
|
BGFV
2053
CALL
DELISTED
Big 5 Sporting Goods
BGFV
| $1.81M | ﹤0.01% |
168,300
+16,700
| +11% | +$202K |
|
2054
PUT
Lightspeed Commerce
LSPD
$1.3B
| $1.81M | ﹤0.01% |
102,800
+24,800
| +32% | +$495K |
|
2055
AutoZone
AZO
$48.3B
| $1.8M | ﹤0.01% |
+842
| New | +$1.83M |
|
2056
Healthcare Realty
HR
$7.42B
| $1.79M | ﹤0.01% |
86,115
+76,314
| +779% | +$1.94M |
|
|
AZUL
2057
CALL
DELISTED
Azul
AZUL
| $1.79M | ﹤0.01% |
220,400
+119,300
| +118% | +$1.01M |
|
|
SAVE
2058
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $1.79M | ﹤0.01% |
95,300
+8,400
| +10% | +$197K |
|
2059
CALL
Lamar Advertising Co
LAMR
$16.2B
| $1.79M | ﹤0.01% |
21,700
+4,600
| +27% | +$438K |
|
2060
Unity
U
$12.5B
| $1.79M | ﹤0.01% |
56,166
+39,194
| +231% | +$1.61M |
|
2061
PUT
Natural Resource Partners
NRP
$1.3B
| $1.79M | ﹤0.01% |
40,400
-4,500
| -10% | -$192K |
|
2062
PUT
EXL Service
EXLS
$4.23B
| $1.78M | ﹤0.01% |
+60,500
| New | +$1.97M |
|
2063
PUT
First Horizon
FHN
$12.1B
| $1.78M | ﹤0.01% |
77,900
+3,500
| +5% | +$79.5K |
|
2064
PUT
Frontline
FRO
$8.75B
| $1.78M | ﹤0.01% |
163,100
+32,200
| +25% | +$353K |
|
2065
PUT
Plains All American Pipeline
PAA
$17.4B
| $1.78M | ﹤0.01% |
169,400
-47,800
| -22% | -$534K |
|
2066
PUT
Sonos
SONO
$1.75B
| $1.78M | ﹤0.01% |
127,900
+29,100
| +29% | +$517K |
|
2067
PUT
RUM Group Inc
RUM
$1.57B
| $1.77M | ﹤0.01% |
144,900
+141,700
| +4,428% | +$1.55M |
|
2068
CALL
Aurinia Pharmaceuticals
AUPH
$1.97B
| $1.77M | ﹤0.01% |
234,900
-39,200
| -14% | -$339K |
|
2069
PUT
Lamb Weston
LW
$6.82B
| $1.76M | ﹤0.01% |
22,800
+14,800
| +185% | +$1.16M |
|
2070
PUT
Agilon Health
AGL
$1.64B
| $1.76M | ﹤0.01% |
3,012
-556
| -16% | -$333K |
|
2071
Altimmune
ALT
$539M
| $1.76M | ﹤0.01% |
137,743
+12,481
| +10% | +$184K |
|
2072
CALL
Exelixis
EXEL
$13.9B
| $1.76M | ﹤0.01% |
112,100
+43,900
| +64% | +$848K |
|
|
OPTU
2073
CALL
Optimum Communications Inc
OPTU
$316M
| $1.75M | ﹤0.01% |
301,200
+240,600
| +397% | +$2.3M |
|
2074
CALL
Atea Pharmaceuticals
AVIR
$379M
| $1.75M | ﹤0.01% |
308,400
+29,800
| +11% | +$228K |
|
2075
PUT
Robert Half
RHI
$3.61B
| $1.75M | ﹤0.01% |
22,900
+17,900
| +358% | +$1.4M |
|
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.