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 | |
|---|---|---|---|---|---|---|
5301
CALL
BioXcel Therapeutics
BTAI
$24.9M
| $120K | ﹤0.01% |
569
+481
| +547% | +$101K |
|
5302
CALL
Cerus
CERS
$433M
| $120K | ﹤0.01% |
22,700
+4,400
| +24% | +$22K |
|
5303
CALL
Cricut
CRCT
$984M
| $120K | ﹤0.01% |
19,700
-1,800
| -8% | -$17.7K |
|
5304
CALL
Donaldson
DCI
$10.9B
| $120K | ﹤0.01% |
2,500
-600
| -19% | -$30.2K |
|
5305
CALL
Dole
DOLE
$1.35B
| $120K | ﹤0.01% |
14,300
-13,600
| -49% | -$149K |
|
5306
Fidelity MSCI Energy Index ETF
FENY
$2.01B
| $120K | ﹤0.01% |
6,224
+2,764
| +80% | +$60.4K |
|
5307
Harrow
HROW
$1.45B
| $120K | ﹤0.01% |
16,523
+6,936
| +72% | +$46.8K |
|
5308
CALL
MSC Industrial Direct
MSM
$6.89B
| $120K | ﹤0.01% |
1,600
+1,000
| +167% | +$82.1K |
|
|
SA
5309
PUT
Seabridge Gold
SA
$2.78B
| $120K | ﹤0.01% |
9,700
+3,500
| +56% | +$56.1K |
|
|
XOMA
5310
CALL
DELISTED
Xoma
XOMA
| $120K | ﹤0.01% |
5,400
+5,300
| +5,300% | +$109K |
|
|
WRK
5311
DELISTED
WestRock Company
WRK
| $120K | ﹤0.01% |
3,025
-10,772
| -78% | -$507K |
|
|
HMLP
5312
CALL
DELISTED
HOEGH LNG PARTNERS LP
HMLP
| $120K | ﹤0.01% |
13,400
+700
| +6% | +$5.33K |
|
|
HTGCR
5313
PUT
DELISTED
HERCULES TECHNOLOGY GROWTH CAP INC TRANS RGTS TO PUR COM STK
HTGCR
| $120K | ﹤0.01% |
8,900
+5,200
| +141% | +$70.1K |
|
|
AHRT
5314
PUT
AH Realty Trust
AHRT
$529M
| $119K | ﹤0.01% |
9,300
+2,700
| +41% | +$36.7K |
|
5315
CALL
Alerus Financial
ALRS
$831M
| $119K | ﹤0.01% |
+5,000
| New | +$127K |
|
5316
PUT
BigBear.ai
BBAI
$1.34B
| $119K | ﹤0.01% |
32,400
+31,100
| +2,392% | +$243K |
|
5317
Beyond Meat
BYND
$292M
| $119K | ﹤0.01% |
5,010
-94,149
| -95% | -$3.01M |
|
5318
CALL
Beazer Homes USA
BZH
$877M
| $119K | ﹤0.01% |
9,900
+3,700
| +60% | +$54.1K |
|
5319
PUT
Cardiff Oncology
CRDF
$66.5M
| $119K | ﹤0.01% |
54,400
+33,200
| +157% | +$55.6K |
|
5320
Carlisle Companies
CSL
$14.3B
| $119K | ﹤0.01% |
501
-1,011
| -67% | -$252K |
|
5321
CubeSmart
CUBE
$9.39B
| $119K | ﹤0.01% |
2,800
-12,061
| -81% | -$555K |
|
5322
DaVita
DVA
$15.4B
| $119K | ﹤0.01% |
+1,500
| New | +$152K |
|
5323
PUT
Extra Space Storage
EXR
$31.3B
| $119K | ﹤0.01% |
700
-14,200
| -95% | -$2.63M |
|
5324
PUT
Karyopharm Therapeutics
KPTI
$43.5M
| $119K | ﹤0.01% |
1,760
+7
| +0.4% | +$642 |
|
5325
CALL
Lipocine
LPCN
$17.5M
| $119K | ﹤0.01% |
8,776
-800
| -8% | -$12.5K |
|
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.