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
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
7276
PUT
Scansource
SCSC
$1.15B
| $45K | ﹤0.01% |
1,300
+700
| +117% | +$23.1K |
|
7277
PUT
SES AI
SES
$203M
| $45K | ﹤0.01% |
+5,000
| New | +$37.7K |
|
|
SRDX
7278
CALL
DELISTED
Surmodics
SRDX
| $45K | ﹤0.01% |
+1,000
| New | +$43.8K |
|
|
SRDX
7279
PUT
DELISTED
Surmodics
SRDX
| $45K | ﹤0.01% |
+1,000
| New | +$43.8K |
|
7280
PUT
Kartoon Studios
TOON
$35.2M
| $45K | ﹤0.01% |
4,500
-20
| -0.4% | -$187 |
|
7281
PUT
Trane Technologies
TT
$100B
| $45K | ﹤0.01% |
300
-200
| -40% | -$32.7K |
|
7282
PUT
WPP
WPP
$4.36B
| $45K | ﹤0.01% |
700
+500
| +250% | +$37.2K |
|
|
CDAK
7283
PUT
DELISTED
Codiak BioSciences, Inc. Common Stock
CDAK
| $45K | ﹤0.01% |
7,200
+7,100
| +7,100% | +$44.6K |
|
|
APEN
7284
CALL
DELISTED
Apollo Endosurgery, Inc.
APEN
| $45K | ﹤0.01% |
7,600
-6,100
| -45% | -$37.2K |
|
|
BOXD
7285
DELISTED
Boxed, Inc.
BOXD
| $45K | ﹤0.01% |
+4,512
| New | +$45.9K |
|
|
AERI
7286
PUT
DELISTED
Aerie Pharmaceuticals
AERI
| $45K | ﹤0.01% |
5,000
-600
| -11% | -$4.63K |
|
|
UBA
7287
CALL
DELISTED
Urstadt Biddle Properties Inc. Class A
UBA
| $45K | ﹤0.01% |
2,400
+200
| +9% | +$3.92K |
|
|
NTP
7288
DELISTED
Nam Tai Property Inc.
NTP
| $45K | ﹤0.01% |
7,346
+1,053
| +17% | +$8.67K |
|
7289
Anixa Biosciences
ANIX
$116M
| $44K | ﹤0.01% |
+16,073
| New | +$47.1K |
|
7290
CALL
Aquestive Therapeutics
AQST
$463M
| $44K | ﹤0.01% |
17,100
-54,200
| -76% | -$158K |
|
7291
CALL
A10 Networks
ATEN
$2.13B
| $44K | ﹤0.01% |
3,200
+1,400
| +78% | +$19.7K |
|
7292
Smartbird Inc
BIRD
$19.5M
| $44K | ﹤0.01% |
370
+59
| +19% | +$11.6K |
|
|
SLAI
7293
DELISTED
SOLAI Ltd ADS
SLAI
| $44K | ﹤0.01% |
227
+189
| +497% | +$44.4K |
|
7294
CareDx
CDNA
$2.26B
| $44K | ﹤0.01% |
1,205
-7,596
| -86% | -$296K |
|
|
7295
PUT
CareDx
CDNA
$2.26B
| $44K | ﹤0.01% |
1,200
-800
| -40% | -$31.2K |
|
|
CGAU
7296
Centerra Gold
CGAU
$3.36B
| $44K | ﹤0.01% |
+4,549
| New | +$40.8K |
|
7297
PUT
ClearPoint Neuro
CLPT
$448M
| $44K | ﹤0.01% |
4,300
+1,500
| +54% | +$13.7K |
|
7298
CALL
Consumer Portfolio Services
CPSS
$202M
| $44K | ﹤0.01% |
4,400
+1,700
| +63% | +$19.1K |
|
|
CRDL
7299
PUT
Cardiol Therapeutics
CRDL
$146M
| $44K | ﹤0.01% |
28,900
-3,200
| -10% | -$5.28K |
|
7300
CALL
Torrid Holdings
CURV
$254M
| $44K | ﹤0.01% |
7,400
-17,300
| -70% | -$147K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.