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 | |
|---|---|---|---|---|---|---|
|
SOL
5376
DELISTED
Emeren Group
SOL
| $115K | ﹤0.01% |
24,216
-7,598
| -24% | -$37K |
|
5377
CALL
Target Hospitality
TH
$1.51B
| $115K | ﹤0.01% |
20,300
+14,000
| +222% | +$87.6K |
|
5378
CALL
Zentalis Pharmaceuticals
ZNTL
$337M
| $115K | ﹤0.01% |
4,100
-27,700
| -87% | -$734K |
|
|
SLCA
5379
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $115K | ﹤0.01% |
10,111
-151,024
| -94% | -$2.54M |
|
|
APRN
5380
PUT
DELISTED
Blue Apron Holdings, Inc. Class A Common Stock
APRN
| $115K | ﹤0.01% |
2,650
-708
| -21% | -$28.8K |
|
|
SWIR
5381
DELISTED
Sierra Wireless
SWIR
| $115K | ﹤0.01% |
4,951
+1,744
| +54% | +$34.2K |
|
|
BRSP
5382
PUT
BrightSpire Capital
BRSP
$634M
| $114K | ﹤0.01% |
15,200
-3,100
| -17% | -$26.3K |
|
5383
PUT
Clearwater Paper
CLW
$339M
| $114K | ﹤0.01% |
3,400
+2,400
| +240% | +$75.1K |
|
5384
CALL
Entravision Communication
EVC
$1.03B
| $114K | ﹤0.01% |
25,100
-4,500
| -15% | -$23.1K |
|
5385
Murphy USA
MUSA
$11.2B
| $114K | ﹤0.01% |
492
-410
| -45% | -$96.7K |
|
5386
CALL
SiTime
SITM
$16B
| $114K | ﹤0.01% |
700
-500
| -42% | -$94.5K |
|
5387
Soluna Holdings
SLNH
$192M
| $114K | ﹤0.01% |
1,124
+932
| +485% | +$181K |
|
5388
SSR Mining
SSRM
$5.32B
| $114K | ﹤0.01% |
6,846
-81,367
| -92% | -$1.68M |
|
5389
CALL
Vicor
VICR
$9.56B
| $114K | ﹤0.01% |
2,100
-5,300
| -72% | -$329K |
|
|
CSII
5390
CALL
DELISTED
Cardiovascular Systems, Inc.
CSII
| $114K | ﹤0.01% |
+8,000
| New | +$139K |
|
5391
PUT
Apogee Enterprises
APOG
$826M
| $113K | ﹤0.01% |
+2,900
| New | +$124K |
|
5392
CALL
CrossAmerica Partners
CAPL
$847M
| $113K | ﹤0.01% |
5,600
+3,700
| +195% | +$78.1K |
|
5393
Cabot Corp
CBT
$4.54B
| $113K | ﹤0.01% |
+1,784
| New | +$122K |
|
|
DRD
5394
DRDGold
DRD
$1.77B
| $113K | ﹤0.01% |
19,294
+14,761
| +326% | +$109K |
|
|
EARN
5395
CALL
Ellington Residential Mortgage REIT
EARN
$162M
| $113K | ﹤0.01% |
15,200
+12,400
| +443% | +$103K |
|
5396
PUT
MasterCraft Boat Holdings
MCFT
$579M
| $113K | ﹤0.01% |
5,400
+5,000
| +1,250% | +$116K |
|
|
MGIC
5397
DELISTED
Magic Software Enterprises
MGIC
| $113K | ﹤0.01% |
6,406
+3,801
| +146% | +$65.1K |
|
5398
CALL
Ingevity
NGVT
$2.51B
| $113K | ﹤0.01% |
1,800
-600
| -25% | -$39.1K |
|
5399
CALL
Purple Innovation
PRPL
$35.3M
| $113K | ﹤0.01% |
1,484
-172
| -10% | -$20K |
|
5400
CALL
Pacer Trendpilot US Large Cap ETF
PTLC
$3.26B
| $113K | ﹤0.01% |
3,100
+1,500
| +94% | +$56.5K |
|
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.