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 | |
|---|---|---|---|---|---|---|
|
EB
6426
CALL
DELISTED
Eventbrite
EB
| $52K | ﹤0.01% |
5,100
-8,700
| -63% | -$104K |
|
6427
Heron Therapeutics
HRTX
$93.9M
| $52K | ﹤0.01% |
+18,901
| New | +$75.9K |
|
6428
CALL
Idacorp
IDA
$8.27B
| $52K | ﹤0.01% |
500
-200
| -29% | -$21.6K |
|
6429
CALL
Jones Lang LaSalle
JLL
$16.3B
| $52K | ﹤0.01% |
300
-400
| -57% | -$79.7K |
|
6430
CALL
LGI Homes
LGIH
$1.27B
| $52K | ﹤0.01% |
600
-1,400
| -70% | -$130K |
|
6431
CALL
Malibu Boats
MBUU
$541M
| $52K | ﹤0.01% |
1,000
+700
| +233% | +$38K |
|
6432
CALL
NerdWallet
NRDS
$592M
| $52K | ﹤0.01% |
6,600
+2,200
| +50% | +$22.3K |
|
6433
Pitney Bowes
PBI
$2.4B
| $52K | ﹤0.01% |
14,496
-15,368
| -51% | -$70K |
|
6434
PUT
Quantum-Si Incorporated
QSI
$155M
| $52K | ﹤0.01% |
22,700
+16,600
| +272% | +$63.6K |
|
6435
CALL
uniQure
QURE
$3.03B
| $52K | ﹤0.01% |
2,800
-3,200
| -53% | -$50.9K |
|
6436
SFL Corp
SFL
$1.64B
| $52K | ﹤0.01% |
+5,551
| New | +$57.8K |
|
|
SIFY
6437
PUT
Sify Technologies
SIFY
$1.06B
| $52K | ﹤0.01% |
4,517
-1,400
| -24% | -$19.8K |
|
6438
CALL
SLR Investment Corp
SLRC
$686M
| $52K | ﹤0.01% |
3,600
-900
| -20% | -$14.5K |
|
6439
PUT
Spire
SR
$4.72B
| $52K | ﹤0.01% |
700
-4,100
| -85% | -$308K |
|
6440
Direxion Daily Technology Bear 3x ETF
TECS
$69.6M
| $52K | ﹤0.01% |
+11
| New | +$47.3K |
|
6441
PUT
Televisa
TV
$1.48B
| $52K | ﹤0.01% |
6,400
+800
| +14% | +$7.55K |
|
|
WBX
6442
PUT
Wallbox
WBX
$77.9M
| $52K | ﹤0.01% |
295
+105
| +55% | +$22.6K |
|
6443
Weis Markets
WMK
$1.91B
| $52K | ﹤0.01% |
711
+395
| +125% | +$30.6K |
|
6444
CALL
WisdomTree
WT
$2.96B
| $52K | ﹤0.01% |
10,400
+2,500
| +32% | +$14.3K |
|
|
CSCI
6445
PUT
DELISTED
COSCIENS Biopharma Inc. Common Stock
CSCI
| $52K | ﹤0.01% |
538
-11
| -2% | -$275 |
|
|
FRBK
6446
DELISTED
Republic First Bancorp Inc
FRBK
| $52K | ﹤0.01% |
13,661
-8,414
| -38% | -$35.9K |
|
|
AIMC
6447
CALL
DELISTED
Altra Industrial Motion Corp
AIMC
| $52K | ﹤0.01% |
1,500
+800
| +114% | +$29.7K |
|
|
LGV
6448
DELISTED
Longview Acquisition Corp. II
LGV
| $52K | ﹤0.01% |
5,399
+4,700
| +672% | +$45.9K |
|
|
AKUS
6449
CALL
DELISTED
Akouos Inc
AKUS
| $52K | ﹤0.01% |
11,300
+7,100
| +169% | +$25.1K |
|
|
STON
6450
PUT
DELISTED
StoneMor Inc.
STON
| $52K | ﹤0.01% |
15,300
+12,900
| +538% | +$36.7K |
|
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.