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 | |
|---|---|---|---|---|---|---|
|
NNDM
2076
PUT
Nano Dimension
NNDM
$309M
| $1.75M | ﹤0.01% |
732,400
-73,200
| -9% | -$224K |
|
2077
PUT
Root
ROOT
$917M
| $1.75M | ﹤0.01% |
222,000
+209,822
| +1,723% | +$3.28M |
|
2078
PUT
IMAX
IMAX
$2.38B
| $1.75M | ﹤0.01% |
123,800
+6,500
| +6% | +$104K |
|
2079
Kyndryl
KD
$2.66B
| $1.75M | ﹤0.01% |
+211,040
| New | +$2.19M |
|
2080
Transocean
RIG
$5.92B
| $1.75M | ﹤0.01% |
706,595
+378,922
| +116% | +$1.21M |
|
|
CIVI
2081
PUT
DELISTED
Civitas Resources
CIVI
| $1.74M | ﹤0.01% |
30,400
+29,200
| +2,433% | +$1.72M |
|
2082
CALL
Rhythm Pharmaceuticals
RYTM
$7B
| $1.74M | ﹤0.01% |
71,200
+69,700
| +4,647% | +$1.3M |
|
|
CLR
2083
PUT
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $1.74M | ﹤0.01% |
26,100
-47,300
| -64% | -$3.19M |
|
2084
PUT
Black Stone Minerals
BSM
$3.11B
| $1.74M | ﹤0.01% |
111,300
+101,500
| +1,036% | +$1.54M |
|
2085
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $1.74M | ﹤0.01% |
40,700
+7,400
| +22% | +$531K |
|
|
SHLX
2086
CALL
DELISTED
Shell Midstream Partners, L.P.
SHLX
| $1.73M | ﹤0.01% |
109,600
+49,200
| +81% | +$760K |
|
2087
PUT
Blink Charging
BLNK
$75.2M
| $1.73M | ﹤0.01% |
97,400
-6,200
| -6% | -$127K |
|
2088
CALL
Denison Mines
DNN
$2.63B
| $1.72M | ﹤0.01% |
1,446,400
-325,800
| -18% | -$386K |
|
2089
PUT
Graphic Packaging
GPK
$3.26B
| $1.72M | ﹤0.01% |
87,200
+30,800
| +55% | +$676K |
|
2090
CALL
Gold Fields
GFI
$29.2B
| $1.72M | ﹤0.01% |
212,600
-75,600
| -26% | -$651K |
|
2091
Enterprise Products Partners
EPD
$83.8B
| $1.72M | ﹤0.01% |
+72,278
| New | +$1.86M |
|
2092
United Natural Foods
UNFI
$3.01B
| $1.72M | ﹤0.01% |
49,963
-3,927
| -7% | -$167K |
|
|
FAZE
2093
CALL
DELISTED
FaZe Holdings Inc. Common Stock
FAZE
| $1.72M | ﹤0.01% |
177,400
-64,000
| -27% | -$850K |
|
2094
CALL
Aecom
ACM
$9.07B
| $1.72M | ﹤0.01% |
25,100
+1,800
| +8% | +$128K |
|
2095
CALL
UiPath
PATH
$5.62B
| $1.72M | ﹤0.01% |
136,100
-6,100
| -4% | -$107K |
|
2096
PUT
Parsons
PSN
$6.28B
| $1.71M | ﹤0.01% |
43,700
+43,600
| +43,600% | +$1.81M |
|
|
GPP
2097
CALL
DELISTED
Green Plains Partners LP
GPP
| $1.71M | ﹤0.01% |
140,400
+85,500
| +156% | +$1.11M |
|
2098
PUT
United States Copper Index Fund
CPER
$742M
| $1.71M | ﹤0.01% |
83,700
+39,300
| +89% | +$827K |
|
|
MTBL
2099
CALL
DELISTED
Moatable, Inc. American Depositary Share (each representing forty-five (45) Class A Ordinary Shares)
MTBL
| $1.71M | ﹤0.01% |
578,000
-43,000
| -7% | -$125K |
|
2100
CALL
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $1.7M | ﹤0.01% |
15,900
-10,700
| -40% | -$673K |
|
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.