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 | |
|---|---|---|---|---|---|---|
|
IAA
2251
DELISTED
IAA, Inc. Common Stock
IAA
| $1.39M | ﹤0.01% |
42,361
+11,757
| +38% | +$430K |
|
2252
Direxion Daily Semiconductor Bear 3X ETF
SOXS
$1.83B
| $1.39M | ﹤0.01% |
10
+5
| +100% | +$515K |
|
2253
PUT
Targa Resources
TRGP
$60.4B
| $1.38M | ﹤0.01% |
23,200
+19,200
| +480% | +$1.38M |
|
|
ESSC
2254
CALL
DELISTED
East Stone Acquisition Corporation Ordinary Shares
ESSC
| $1.38M | ﹤0.01% |
134,600
+6,800
| +5% | +$70.9K |
|
2255
PUT
Pinnacle West Capital
PNW
$12.9B
| $1.38M | ﹤0.01% |
18,900
-6,400
| -25% | -$479K |
|
2256
CALL
Signet Jewelers
SIG
$3.55B
| $1.38M | ﹤0.01% |
25,800
+11,600
| +82% | +$756K |
|
2257
CALL
Jabil
JBL
$32.8B
| $1.38M | ﹤0.01% |
26,900
-31,700
| -54% | -$1.84M |
|
2258
Infosys
INFY
$45B
| $1.38M | ﹤0.01% |
74,336
+66,626
| +864% | +$1.32M |
|
2259
Neurocrine Biosciences
NBIX
$17.7B
| $1.37M | ﹤0.01% |
14,103
-9,456
| -40% | -$873K |
|
2260
PUT
Unum
UNM
$13.8B
| $1.37M | ﹤0.01% |
40,400
+14,700
| +57% | +$498K |
|
2261
Manchester United
MANU
$3.91B
| $1.37M | ﹤0.01% |
123,472
+4,106
| +3% | +$53.2K |
|
|
TTCF
2262
CALL
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $1.37M | ﹤0.01% |
218,000
+12,400
| +6% | +$98.9K |
|
2263
CALL
Array Technologies
ARRY
$818M
| $1.37M | ﹤0.01% |
124,700
+63,800
| +105% | +$630K |
|
|
JKS
2264
CALL
JinkoSolar
JKS
$775M
| $1.37M | ﹤0.01% |
19,800
+2,300
| +13% | +$129K |
|
2265
State Street SPDR S&P Retail ETF
XRT
$435M
| $1.37M | ﹤0.01% |
+23,530
| New | +$1.6M |
|
|
CRHC
2266
CALL
DELISTED
Cohn Robbins Holdings Corp.
CRHC
| $1.37M | ﹤0.01% |
137,700
-30,400
| -18% | -$302K |
|
2267
CALL
Nice
NICE
$5.29B
| $1.37M | ﹤0.01% |
7,100
-600
| -8% | -$121K |
|
2268
MPLX
MPLX
$59.5B
| $1.36M | ﹤0.01% |
46,848
+19,563
| +72% | +$627K |
|
2269
ATI
ATI
$27B
| $1.36M | ﹤0.01% |
60,103
+16,936
| +39% | +$446K |
|
|
OPLN
2270
PUT
Openlane
OPLN
$4.17B
| $1.36M | ﹤0.01% |
92,300
-21,600
| -19% | -$339K |
|
|
VISN
2271
CALL
Vistance Networks Inc
VISN
$2.66B
| $1.36M | ﹤0.01% |
222,600
-167,900
| -43% | -$1.17M |
|
2272
CALL
Perion Network
PERI
$367M
| $1.36M | ﹤0.01% |
74,800
+3,100
| +4% | +$64.3K |
|
2273
CALL
Algoma Steel
ASTL
$455M
| $1.36M | ﹤0.01% |
+151,300
| New | +$1.45M |
|
|
TWKS
2274
CALL
DELISTED
Thoughtworks Holding, Inc. Common Stock
TWKS
| $1.36M | ﹤0.01% |
96,300
+18,100
| +23% | +$313K |
|
2275
CALL
RUM Group Inc
RUM
$1.57B
| $1.36M | ﹤0.01% |
136,200
-88,100
| -39% | -$961K |
|
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.