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 | |
|---|---|---|---|---|---|---|
6601
PUT
Gladstone Investment Corp
GAIN
$643M
| $46K | ﹤0.01% |
3,300
+1,800
| +120% | +$27.1K |
|
6602
International Seaways
INSW
$4.76B
| $46K | ﹤0.01% |
2,203
-37,883
| -95% | -$832K |
|
6603
PUT
Mirion Technologies
MIR
$3.73B
| $46K | ﹤0.01% |
8,000
-34,200
| -81% | -$252K |
|
|
MVO
6604
CALL
DELISTED
MV Oil Trust
MVO
| $46K | ﹤0.01% |
4,100
-2,400
| -37% | -$26.6K |
|
|
OBE
6605
CALL
Obsidian Energy
OBE
$716M
| $46K | ﹤0.01% |
+6,000
| New | +$53.1K |
|
6606
iShares MSCI USA Quality Factor ETF
QUAL
$46.4B
| $46K | ﹤0.01% |
414
+136
| +49% | +$16.6K |
|
6607
PUT
Reynolds Consumer Products
REYN
$5.26B
| $46K | ﹤0.01% |
1,700
+100
| +6% | +$2.8K |
|
6608
PUT
Repay Holdings
RPAY
$331M
| $46K | ﹤0.01% |
+3,600
| New | +$46.9K |
|
|
SEMR
6609
PUT
DELISTED
Semrush
SEMR
| $46K | ﹤0.01% |
3,600
+600
| +20% | +$6.54K |
|
6610
PUT
Star Group
SGU
$412M
| $46K | ﹤0.01% |
5,100
+3,100
| +155% | +$32K |
|
6611
CALL
StoneX
SNEX
$9.26B
| $46K | ﹤0.01% |
+3,038
| New | +$43.9K |
|
|
6612
PUT
StoneX
SNEX
$9.26B
| $46K | ﹤0.01% |
3,038
+2,025
| +200% | +$29.2K |
|
6613
PUT
Sasol
SSL
$7.5B
| $46K | ﹤0.01% |
2,000
-100
| -5% | -$2.46K |
|
6614
PUT
TriNet
TNET
$3.02B
| $46K | ﹤0.01% |
600
-12,200
| -95% | -$1.02M |
|
6615
CALL
TechTarget
TTGT
$325M
| $46K | ﹤0.01% |
700
-700
| -50% | -$48.8K |
|
6616
CALL
Varonis Systems
VRNS
$4.59B
| $46K | ﹤0.01% |
1,600
-11,400
| -88% | -$424K |
|
6617
CALL
Energous
WATT
$77.6M
| $46K | ﹤0.01% |
77
-2
| -3% | -$1.22K |
|
|
CO
6618
CALL
DELISTED
Global Cord Blood Corporation
CO
| $46K | ﹤0.01% |
15,800
+14,800
| +1,480% | +$45.9K |
|
|
AKRO
6619
PUT
DELISTED
Akero Therapeutics
AKRO
| $45K | ﹤0.01% |
4,800
+4,700
| +4,700% | +$49K |
|
6620
CALL
AppFolio
APPF
$6.38B
| $45K | ﹤0.01% |
500
-300
| -38% | -$30.2K |
|
6621
Global X FTSE Southeast Asia ETF
ASEA
$100M
| $45K | ﹤0.01% |
3,339
+2,617
| +362% | +$38.9K |
|
6622
CALL
AtaiBeckley Inc
ATAI
$2.66B
| $45K | ﹤0.01% |
12,600
+10,000
| +385% | +$40.9K |
|
6623
CALL
Mission Produce
AVO
$1.11B
| $45K | ﹤0.01% |
3,200
+2,200
| +220% | +$29.4K |
|
|
BKYI
6624
PUT
BIO-key International
BKYI
$4.76M
| $45K | ﹤0.01% |
142
-88
| -38% | -$31.2K |
|
|
BRT
6625
PUT
BRT Apartments
BRT
$281M
| $45K | ﹤0.01% |
2,100
+1,200
| +133% | +$26.4K |
|
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.