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 | |
|---|---|---|---|---|---|---|
4501
CALL
Wingstop
WING
$3.66B
| $216K | ﹤0.01% |
2,900
+1,700
| +142% | +$148K |
|
|
ROCC
4502
CALL
DELISTED
Ranger Oil Corporation Class A Common Stock
ROCC
| $216K | ﹤0.01% |
6,600
+3,100
| +89% | +$117K |
|
|
MACK
4503
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $216K | ﹤0.01% |
36,468
-1,351
| -4% | -$7.62K |
|
4504
Acacia Research
ACTG
$426M
| $215K | ﹤0.01% |
42,786
-11,493
| -21% | -$52.7K |
|
4505
CALL
ADMA Biologics
ADMA
$2.01B
| $215K | ﹤0.01% |
108,600
+47,000
| +76% | +$92.5K |
|
|
ANSS
4506
CALL
DELISTED
Ansys
ANSS
| $215K | ﹤0.01% |
900
-2,300
| -72% | -$609K |
|
4507
GoPro
GPRO
$124M
| $215K | ﹤0.01% |
38,984
-92,748
| -70% | -$678K |
|
4508
CALL
Green Brick Partners
GRBK
$3.03B
| $215K | ﹤0.01% |
11,000
+5,600
| +104% | +$118K |
|
|
ILPT
4509
CALL
Industrial Logistics Properties Trust
ILPT
$565M
| $215K | ﹤0.01% |
15,300
+13,500
| +750% | +$221K |
|
4510
Workhorse Group
WKHS
$34.5M
| $215K | ﹤0.01% |
28
+12
| +75% | +$113K |
|
4511
ACV Auctions
ACVA
$1.4B
| $214K | ﹤0.01% |
+32,797
| New | +$338K |
|
4512
CALL
Compañía de Minas Buenaventura
BVN
$8.09B
| $214K | ﹤0.01% |
32,500
+600
| +2% | +$5.18K |
|
|
CIVI
4513
CALL
DELISTED
Civitas Resources
CIVI
| $214K | ﹤0.01% |
4,100
+2,200
| +116% | +$144K |
|
4514
Under Armour Class C
UA
$2.85B
| $214K | ﹤0.01% |
28,356
-13,332
| -32% | -$150K |
|
4515
PUT
Arch Capital
ACGL
$34.5B
| $213K | ﹤0.01% |
4,700
-800
| -15% | -$37.1K |
|
4516
Arthur J. Gallagher & Co
AJG
$65.9B
| $213K | ﹤0.01% |
+1,307
| New | +$217K |
|
4517
Smartbird Inc
BIRD
$20.3M
| $213K | ﹤0.01% |
2,713
+2,343
| +633% | +$237K |
|
4518
PUT
Barnes & Noble Education
BNED
$430M
| $213K | ﹤0.01% |
730
+725
| +14,500% | +$210K |
|
4519
Invesco CurrencyShares British Pound Sterling Trust
FXB
$77.8M
| $213K | ﹤0.01% |
1,824
-633
| -26% | -$76.4K |
|
4520
PUT
National Grid
NGG
$80.8B
| $213K | ﹤0.01% |
3,561
+1,560
| +78% | +$103K |
|
4521
PUT
Oric Pharmaceuticals
ORIC
$1.2B
| $213K | ﹤0.01% |
+47,600
| New | +$190K |
|
4522
Root
ROOT
$919M
| $213K | ﹤0.01% |
9,966
+6,562
| +193% | +$178K |
|
4523
CALL
Rapid7
RPD
$634M
| $213K | ﹤0.01% |
3,200
-11,600
| -78% | -$959K |
|
4524
PUT
SFL Corp
SFL
$1.64B
| $213K | ﹤0.01% |
22,500
+12,500
| +125% | +$130K |
|
|
RTL
4525
DELISTED
The Necessity Retail REIT, Inc. Class A Common Stock
RTL
| $213K | ﹤0.01% |
29,277
+24,176
| +474% | +$182K |
|
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.