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 | |
|---|---|---|---|---|---|---|
|
LPRO
7951
PUT
Open Lending Corp
LPRO
$372M
| $14K | ﹤0.01% |
1,400
+1,000
| +250% | +$13.4K |
|
7952
CALL
Landstar System
LSTR
$6.04B
| $14K | ﹤0.01% |
100
-5,200
| -98% | -$774K |
|
|
7953
PUT
Landstar System
LSTR
$6.04B
| $14K | ﹤0.01% |
100
-300
| -75% | -$44.7K |
|
7954
Pulmonx
LUNG
$52.8M
| $14K | ﹤0.01% |
990
-2,555
| -72% | -$52.6K |
|
7955
CALL
MasterCraft Boat Holdings
MCFT
$596M
| $14K | ﹤0.01% |
700
-1,900
| -73% | -$44.1K |
|
7956
PUT
Medpace
MEDP
$16.3B
| $14K | ﹤0.01% |
+100
| New | +$14.5K |
|
7957
MeiraGTx Holdings
MGTX
$1.08B
| $14K | ﹤0.01% |
1,931
-6,362
| -77% | -$61.7K |
|
7958
AdvisorShares Pure US Cannabis ETF
MSOS
$814M
| $14K | ﹤0.01% |
1,433
-225,758
| -99% | -$3.35M |
|
7959
CALL
Mueller Water Products
MWA
$3.94B
| $14K | ﹤0.01% |
1,200
+400
| +50% | +$4.82K |
|
7960
CALL
Nicolet Bankshares
NIC
$3.6B
| $14K | ﹤0.01% |
200
| – | – |
|
|
NOAH
7961
CALL
Noah Holdings
NOAH
$590M
| $14K | ﹤0.01% |
700
-2,500
| -78% | -$46.6K |
|
|
ONTF
7962
CALL
DELISTED
ON24
ONTF
| $14K | ﹤0.01% |
1,500
-2,400
| -62% | -$29.1K |
|
7963
PUT
Ouster
OUST
$2.11B
| $14K | ﹤0.01% |
910
+220
| +32% | +$6.17K |
|
7964
Virtus InfraCap US Preferred Stock ETF
PFFA
$2.42B
| $14K | ﹤0.01% |
667
-2,555
| -79% | -$57.5K |
|
7965
PUT
Pulse Biosciences
PLSE
$2.37B
| $14K | ﹤0.01% |
9,500
+9,100
| +2,275% | +$22.9K |
|
7966
CALL
Richardson Electronics
RELL
$244M
| $14K | ﹤0.01% |
1,000
+900
| +900% | +$12K |
|
7967
PUT
Construction Partners
ROAD
$5.88B
| $14K | ﹤0.01% |
700
-800
| -53% | -$18.9K |
|
7968
PUT
Sonic Automotive
SAH
$3.56B
| $14K | ﹤0.01% |
400
-1,800
| -82% | -$77.3K |
|
7969
PUT
Surgery Partners
SGRY
$2.15B
| $14K | ﹤0.01% |
500
-13,100
| -96% | -$572K |
|
7970
Virgin Galactic
SPCE
$315M
| $14K | ﹤0.01% |
122
+10
| +9% | +$1.45K |
|
7971
CALL
Stewart Information Services
STC
$2.14B
| $14K | ﹤0.01% |
+300
| New | +$16.1K |
|
7972
CALL
Sutro Biopharma
STRO
$386M
| $14K | ﹤0.01% |
+270
| New | +$15.1K |
|
7973
Tucows
TCX
$104M
| $14K | ﹤0.01% |
319
+245
| +331% | +$13K |
|
7974
CALL
Teekay
TK
$996M
| $14K | ﹤0.01% |
5,000
-700
| -12% | -$2.29K |
|
7975
CALL
UNIFI
UFI
$114M
| $14K | ﹤0.01% |
+1,000
| New | +$15.1K |
|
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.