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 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1926
CALL
NextCure
NXTC
$17.3M
| $1.91M | ﹤0.01% |
33,858
+33,350
| +6,565% | +$1.74M |
|
|
NSTG
1927
PUT
DELISTED
NanoString Technologies, Inc.
NSTG
| $1.91M | ﹤0.01% |
150,200
+131,100
| +686% | +$2.44M |
|
1928
United States Brent Oil Fund
BNO
$815M
| $1.91M | ﹤0.01% |
58,217
+17,411
| +43% | +$559K |
|
1929
CALL
CubeSmart
CUBE
$9.53B
| $1.91M | ﹤0.01% |
44,600
-5,600
| -11% | -$258K |
|
1930
CALL
Warrior Met Coal
HCC
$4.23B
| $1.9M | ﹤0.01% |
62,200
+40,400
| +185% | +$1.4M |
|
1931
CALL
First Interstate BancSystem
FIBK
$3.7B
| $1.9M | ﹤0.01% |
49,900
+44,400
| +807% | +$1.58M |
|
1932
CALL
Stratasys
SSYS
$697M
| $1.9M | ﹤0.01% |
101,400
-80,000
| -44% | -$1.57M |
|
1933
CALL
Zimmer Biomet
ZBH
$17.7B
| $1.9M | ﹤0.01% |
32,400
-77,000
| -70% | -$9.14M |
|
1934
CALL
Banco Bradesco
BBD
$38.1B
| $1.9M | ﹤0.01% |
582,264
-381,083
| -40% | -$1.46M |
|
1935
PUT
NETSCOUT
NTCT
$2.86B
| $1.9M | ﹤0.01% |
56,100
+55,400
| +7,914% | +$1.86M |
|
1936
CALL
Planet Fitness
PLNT
$4.23B
| $1.9M | ﹤0.01% |
27,900
+1,200
| +4% | +$88.7K |
|
1937
CALL
TG Therapeutics
TGTX
$8.58B
| $1.9M | ﹤0.01% |
446,200
+243,500
| +120% | +$1.52M |
|
1938
CALL
Virtu Financial
VIRT
$5.2B
| $1.9M | ﹤0.01% |
81,000
+11,800
| +17% | +$338K |
|
1939
CALL
Silicon Laboratories
SLAB
$7.15B
| $1.89M | ﹤0.01% |
13,500
+13,300
| +6,650% | +$1.86M |
|
1940
iShares MSCI EAFE ETF
EFA
$76.4B
| $1.89M | ﹤0.01% |
30,229
-19,247
| -39% | -$1.31M |
|
|
CCXI
1941
CALL
DELISTED
ChemoCentryx, Inc.
CCXI
| $1.89M | ﹤0.01% |
76,200
+18,400
| +32% | +$406K |
|
1942
CALL
Murphy Oil
MUR
$5.58B
| $1.89M | ﹤0.01% |
62,500
-3,100
| -5% | -$119K |
|
1943
CALL
ResMed
RMD
$28.3B
| $1.89M | ﹤0.01% |
9,000
+1,900
| +27% | +$404K |
|
|
GOOS
1944
CALL
Canada Goose Holdings
GOOS
$868M
| $1.89M | ﹤0.01% |
104,700
+13,000
| +14% | +$274K |
|
|
MFA
1945
CALL
MFA Financial
MFA
$929M
| $1.89M | ﹤0.01% |
175,400
+151,825
| +644% | +$2.04M |
|
|
SAFE
1946
PUT
DELISTED
Safehold Inc.
SAFE
| $1.89M | ﹤0.01% |
53,300
+2,100
| +4% | +$91.4K |
|
1947
PUT
Camping World
CWH
$363M
| $1.88M | ﹤0.01% |
87,300
-45,500
| -34% | -$1.2M |
|
|
MNDT
1948
CALL
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.88M | ﹤0.01% |
86,000
-136,700
| -61% | -$3M |
|
1949
PUT
Shake Shack
SHAK
$2.3B
| $1.87M | ﹤0.01% |
47,400
-29,700
| -39% | -$1.52M |
|
1950
CALL
Sociedad Química y Minera de Chile
SQM
$19.6B
| $1.87M | ﹤0.01% |
22,400
+8,200
| +58% | +$721K |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.