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 | |
|---|---|---|---|---|---|---|
8676
PUT
Anixa Biosciences
ANIX
$118M
| $6K | ﹤0.01% |
2,100
| – | – |
|
|
API
8677
CALL
Agora
API
$337M
| $6K | ﹤0.01% |
1,000
-5,800
| -85% | -$41.1K |
|
|
APLT
8678
DELISTED
Applied Therapeutics
APLT
| $6K | ﹤0.01% |
7,105
-929
| -12% | -$1.52K |
|
8679
PUT
Aquestive Therapeutics
AQST
$468M
| $6K | ﹤0.01% |
10,300
+3,000
| +41% | +$3.99K |
|
8680
CALL
AdvanSix
ASIX
$546M
| $6K | ﹤0.01% |
200
-2,300
| -92% | -$103K |
|
8681
AST SpaceMobile
ASTS
$17.4B
| $6K | ﹤0.01% |
+1,110
| New | +$8.7K |
|
8682
Astronics
ATRO
$3.47B
| $6K | ﹤0.01% |
+733
| New | +$6.61K |
|
8683
AudioCodes
AUDC
$249M
| $6K | ﹤0.01% |
+291
| New | +$6.67K |
|
8684
CALL
Avalo Therapeutics
AVTX
$1.03B
| $6K | ﹤0.01% |
+4
| New | +$5.35K |
|
8685
CALL
AYTU BioPharma
AYTU
$22.1M
| $6K | ﹤0.01% |
445
-80
| -15% | -$1.02K |
|
8686
CALL
Breakwave Dry Bulk Shipping ETF
BDRY
$27.2M
| $6K | ﹤0.01% |
400
-300
| -43% | -$6.41K |
|
|
8687
PUT
Breakwave Dry Bulk Shipping ETF
BDRY
$27.2M
| $6K | ﹤0.01% |
400
+300
| +300% | +$6.41K |
|
8688
CALL
Biomerica
BMRA
$5.01M
| $6K | ﹤0.01% |
263
-4,375
| -94% | -$125K |
|
8689
CALL
Boston Omaha
BOC
$434M
| $6K | ﹤0.01% |
+300
| New | +$6.57K |
|
8690
PUT
Ceco Environmental
CECO
$4.31B
| $6K | ﹤0.01% |
+1,100
| New | +$6.1K |
|
|
CLDT
8691
Chatham Lodging
CLDT
$643M
| $6K | ﹤0.01% |
+585
| New | +$7.36K |
|
8692
PUT
Core & Main
CNM
$8.17B
| $6K | ﹤0.01% |
+300
| New | +$6.95K |
|
8693
Compass
COMP
$8.82B
| $6K | ﹤0.01% |
1,682
-6,663
| -80% | -$36.4K |
|
8694
CALL
Customers Bancorp
CUBI
$2.66B
| $6K | ﹤0.01% |
+200
| New | +$8.13K |
|
8695
Torrid Holdings
CURV
$257M
| $6K | ﹤0.01% |
1,595
-17,507
| -92% | -$98.3K |
|
8696
PUT
Douglas Emmett
DEI
$2.03B
| $6K | ﹤0.01% |
+300
| New | +$8.37K |
|
8697
Donnelley Financial Solutions
DFIN
$1.26B
| $6K | ﹤0.01% |
222
-151
| -40% | -$4.48K |
|
8698
Diodes
DIOD
$3.95B
| $6K | ﹤0.01% |
+94
| New | +$6.85K |
|
8699
PUT
Duluth Holdings
DLTH
$162M
| $6K | ﹤0.01% |
700
-2,700
| -79% | -$31.4K |
|
8700
CALL
Destination XL Group
DXLG
$34.3M
| $6K | ﹤0.01% |
2,000
-169,500
| -99% | -$764K |
|
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.