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 | |
|---|---|---|---|---|---|---|
5826
CALL
Sensus Healthcare
SRTS
$47.9M
| $82K | ﹤0.01% |
10,700
-3,800
| -26% | -$31.9K |
|
|
BECN
5827
PUT
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $82K | ﹤0.01% |
1,600
+1,400
| +700% | +$82.1K |
|
|
NM
5828
DELISTED
Navios Maritime Holdings Inc.
NM
| $82K | ﹤0.01% |
38,745
+32,613
| +532% | +$106K |
|
|
IRNT
5829
PUT
DELISTED
IronNet, Inc.
IRNT
| $82K | ﹤0.01% |
37,300
-31,200
| -46% | -$88.1K |
|
|
MACK
5830
PUT
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $82K | ﹤0.01% |
13,900
-2,600
| -16% | -$14.7K |
|
|
HUSE
5831
CALL
DELISTED
Strategy Shares US Market Rotation Strategy ETF
HUSE
| $82K | ﹤0.01% |
4,000
-4,200
| -51% | -$86.1K |
|
5832
CALL
Bally's
BALY
$682M
| $81K | ﹤0.01% |
4,100
-3,800
| -48% | -$98.3K |
|
5833
CALL
Carlyle Secured Lending
CGBD
$694M
| $81K | ﹤0.01% |
6,400
-6,900
| -52% | -$96.8K |
|
5834
PUT
Full House Resorts
FLL
$80.1M
| $81K | ﹤0.01% |
13,400
+12,300
| +1,118% | +$94.8K |
|
5835
PUT
Gentex
GNTX
$4.97B
| $81K | ﹤0.01% |
2,900
-1,400
| -33% | -$40.7K |
|
5836
PUT
The Honest Company
HNST
$402M
| $81K | ﹤0.01% |
27,900
-35,400
| -56% | -$128K |
|
5837
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$18.5B
| $81K | ﹤0.01% |
+1,595
| New | +$83.2K |
|
5838
iShares US Aerospace & Defense ETF
ITA
$14.2B
| $81K | ﹤0.01% |
+824
| New | +$84.8K |
|
|
NCTY
5839
CALL
The9 Ltd
NCTY
$68.1M
| $81K | ﹤0.01% |
4,860
+2,580
| +113% | +$51.1K |
|
5840
PUT
NerdWallet
NRDS
$592M
| $81K | ﹤0.01% |
10,300
+1,800
| +21% | +$18.3K |
|
|
ODP
5841
CALL
DELISTED
ODP
ODP
| $81K | ﹤0.01% |
2,700
+1,900
| +238% | +$76.7K |
|
5842
CALL
ONE Gas
OGS
$4.87B
| $81K | ﹤0.01% |
1,000
+200
| +25% | +$17.1K |
|
5843
OR Royalties Inc
OR
$5.58B
| $81K | ﹤0.01% |
8,074
+4,047
| +100% | +$48.6K |
|
5844
Global X US Infrastructure Development ETF
PAVE
$13.9B
| $81K | ﹤0.01% |
3,564
-10,564
| -75% | -$271K |
|
5845
CALL
Puma Biotechnology
PBYI
$404M
| $81K | ﹤0.01% |
28,600
+9,700
| +51% | +$24.1K |
|
5846
PUT
Pegasystems
PEGA
$5.02B
| $81K | ﹤0.01% |
3,400
-5,800
| -63% | -$173K |
|
|
SOL
5847
PUT
DELISTED
Emeren Group
SOL
| $81K | ﹤0.01% |
17,100
-3,200
| -16% | -$15.6K |
|
5848
SPX Corp
SPXC
$11B
| $81K | ﹤0.01% |
1,549
+1,113
| +255% | +$53.7K |
|
5849
Village Farms International
VFF
$234M
| $81K | ﹤0.01% |
31,038
+12,477
| +67% | +$45.3K |
|
5850
CALL
Verastem
VSTM
$510M
| $81K | ﹤0.01% |
5,858
-3,492
| -37% | -$55.6K |
|
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.