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
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4051
Oil States International
OIS
$483M
| $423K | ﹤0.01% |
60,952
+57,186
| +1,518% | +$362K |
|
4052
PUT
Textron
TXT
$15.6B
| $423K | ﹤0.01% |
5,700
+1,200
| +27% | +$86.6K |
|
4053
CALL
XWELL
XWEL
$8.87M
| $422K | ﹤0.01% |
18,715
-1,550
| -8% | -$41.5K |
|
|
CCEC
4054
CALL
Capital Clean Energy Carriers
CCEC
$1.36B
| $422K | ﹤0.01% |
23,200
+18,800
| +427% | +$297K |
|
|
SQSP
4055
CALL
DELISTED
Squarespace, Inc.
SQSP
| $422K | ﹤0.01% |
16,500
+10,500
| +175% | +$300K |
|
4056
CALL
National Beverage
FIZZ
$3.05B
| $421K | ﹤0.01% |
9,700
+100
| +1% | +$4.35K |
|
4057
IonQ
IONQ
$12.6B
| $421K | ﹤0.01% |
+33,042
| New | +$444K |
|
|
SRNE
4058
CALL
DELISTED
Sorrento Therapeutics, Inc.
SRNE
| $421K | ﹤0.01% |
181,000
-896,500
| -83% | -$2.8M |
|
4059
PUT
Alto Ingredients
ALTO
$345M
| $420K | ﹤0.01% |
61,700
-98,400
| -61% | -$551K |
|
4060
AppFolio
APPF
$6.31B
| $420K | ﹤0.01% |
3,716
+3,593
| +2,921% | +$414K |
|
4061
PUT
Arqit Quantum
ARQQ
$305M
| $420K | ﹤0.01% |
1,080
-2,820
| -72% | -$1.14M |
|
|
ARR
4062
Armour Residential REIT
ARR
$2.32B
| $420K | ﹤0.01% |
+10,006
| New | +$446K |
|
4063
CALL
Valley National Bancorp
VLY
$8.01B
| $420K | ﹤0.01% |
32,300
+6,000
| +23% | +$83.6K |
|
4064
Global X Cybersecurity ETF
BUG
$1.26B
| $419K | ﹤0.01% |
13,356
-10,912
| -45% | -$321K |
|
4065
CALL
Iridium Communications
IRDM
$4.81B
| $419K | ﹤0.01% |
10,400
-8,100
| -44% | -$305K |
|
4066
CALL
Westlake Corp
WLK
$9.25B
| $419K | ﹤0.01% |
3,400
+1,800
| +113% | +$196K |
|
4067
CALL
LendingTree
TREE
$572M
| $418K | ﹤0.01% |
3,500
+1,500
| +75% | +$177K |
|
4068
PUT
WillScot Mobile Mini Holdings
WSC
$4.66B
| $418K | ﹤0.01% |
10,700
-2,500
| -19% | -$94K |
|
4069
Cars.com
CARS
$705M
| $417K | ﹤0.01% |
+28,915
| New | +$444K |
|
4070
CALL
Core Laboratories
CLB
$493M
| $417K | ﹤0.01% |
13,200
+400
| +3% | +$11.2K |
|
4071
Celldex Therapeutics
CLDX
$2.79B
| $417K | ﹤0.01% |
12,252
-738
| -6% | -$23.6K |
|
4072
CALL
Adecoagro
AGRO
$1.45B
| $416K | ﹤0.01% |
34,500
+31,900
| +1,227% | +$294K |
|
4073
PUT
United States Copper Index Fund
CPER
$742M
| $416K | ﹤0.01% |
14,500
+600
| +4% | +$16.6K |
|
4074
CALL
Tootsie Roll Industries
TR
$2.94B
| $416K | ﹤0.01% |
13,417
+1,476
| +12% | +$44K |
|
|
EGIO
4075
CALL
DELISTED
Edgio, Inc. Common Stock
EGIO
| $416K | ﹤0.01% |
1,995
-518
| -21% | -$86.4K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.