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 | |
|---|---|---|---|---|---|---|
4851
CALL
MarineMax
HZO
$759M
| $166K | ﹤0.01% |
4,600
-4,600
| -50% | -$185K |
|
4852
QuinStreet
QNST
$890M
| $166K | ﹤0.01% |
16,577
-2,847
| -15% | -$29.9K |
|
|
SOL
4853
CALL
DELISTED
Emeren Group
SOL
| $166K | ﹤0.01% |
35,100
+1,100
| +3% | +$5.36K |
|
4854
ARS Pharmaceuticals
SPRY
$509M
| $166K | ﹤0.01% |
39,195
+38,824
| +10,465% | +$135K |
|
|
PDCO
4855
DELISTED
Patterson Companies, Inc.
PDCO
| $166K | ﹤0.01% |
+5,480
| New | +$172K |
|
|
HZON
4856
PUT
DELISTED
Horizon Acquisition Corporation II
HZON
| $166K | ﹤0.01% |
+16,800
| New | +$166K |
|
4857
CALL
Crown Holdings
CCK
$12.8B
| $165K | ﹤0.01% |
1,800
-100
| -5% | -$10.7K |
|
|
GOOD
4858
PUT
Gladstone Commercial Corp
GOOD
$605M
| $165K | ﹤0.01% |
8,800
-7,400
| -46% | -$150K |
|
4859
Integra LifeSciences
IART
$1.29B
| $165K | ﹤0.01% |
+3,065
| New | +$184K |
|
4860
iShares Russell 2000 Growth ETF
IWO
$14.3B
| $165K | ﹤0.01% |
800
| – | – |
|
4861
CALL
Super Micro Computer
SMCI
$18.4B
| $165K | ﹤0.01% |
41,000
+34,000
| +486% | +$155K |
|
|
TSE
4862
CALL
DELISTED
Trinseo
TSE
| $165K | ﹤0.01% |
4,300
+1,900
| +79% | +$86.1K |
|
|
UNIT
4863
PUT
Uniti Group
UNIT
$2.36B
| $165K | ﹤0.01% |
17,600
-31,000
| -64% | -$358K |
|
|
CRGE
4864
CALL
DELISTED
Charge Enterprises, Inc. Common Stock
CRGE
| $165K | ﹤0.01% |
+34,600
| New | +$179K |
|
|
PACW
4865
CALL
DELISTED
PacWest Bancorp
PACW
| $165K | ﹤0.01% |
6,200
+5,000
| +417% | +$162K |
|
|
CTIC
4866
PUT
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $165K | ﹤0.01% |
27,700
-30,000
| -52% | -$154K |
|
4867
PUT
AvePoint
AVPT
$2.76B
| $164K | ﹤0.01% |
37,900
+1,900
| +5% | +$9.65K |
|
4868
CALL
Beam Global
BEEM
$23.3M
| $164K | ﹤0.01% |
10,600
-22,100
| -68% | -$381K |
|
4869
PUT
Celanese
CE
$4.9B
| $164K | ﹤0.01% |
1,400
-3,500
| -71% | -$502K |
|
|
OPLN
4870
Openlane
OPLN
$4.21B
| $164K | ﹤0.01% |
11,105
+4,681
| +73% | +$73.4K |
|
4871
CALL
Impinj
PI
$4.62B
| $164K | ﹤0.01% |
2,800
| – | – |
|
4872
Rush Street Interactive
RSI
$2.77B
| $164K | ﹤0.01% |
35,159
+13,163
| +60% | +$78.4K |
|
4873
CALL
Valaris
VAL
$5.48B
| $164K | ﹤0.01% |
3,900
+2,700
| +225% | +$145K |
|
4874
Vanguard Total World Stock ETF
VT
$77.1B
| $164K | ﹤0.01% |
+1,922
| New | +$178K |
|
|
MDC
4875
DELISTED
M.D.C. Holdings, Inc.
MDC
| $164K | ﹤0.01% |
5,088
+3,043
| +149% | +$109K |
|
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.