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 | |
|---|---|---|---|---|---|---|
5101
CALL
Herbalife
HLF
$1.28B
| $206K | ﹤0.01% |
6,800
-800
| -11% | -$31.3K |
|
5102
CALL
Harmonic Inc
HLIT
$1.42B
| $206K | ﹤0.01% |
22,200
-14,400
| -39% | -$141K |
|
5103
PUT
PennantPark Floating Rate Capital
PFLT
$752M
| $206K | ﹤0.01% |
15,300
+9,600
| +168% | +$126K |
|
5104
Phunware
PHUN
$43.4M
| $206K | ﹤0.01% |
1,486
+1,296
| +682% | +$180K |
|
|
BCIC
5105
BCP Investment Corp
BCIC
$94.9M
| $206K | ﹤0.01% |
+8,529
| New | +$208K |
|
5106
Qualys
QLYS
$6.78B
| $206K | ﹤0.01% |
1,451
+495
| +52% | +$63.2K |
|
|
SAND
5107
PUT
DELISTED
Sandstorm Gold
SAND
| $206K | ﹤0.01% |
25,500
-44,200
| -63% | -$305K |
|
|
SJT
5108
PUT
San Juan Basin Royalty Trust
SJT
$129M
| $206K | ﹤0.01% |
23,600
+14,100
| +148% | +$98.7K |
|
|
SEEL
5109
DELISTED
Seelos Therapeutics, Inc. Common Stock
SEEL
| $206K | ﹤0.01% |
64
+14
| +28% | +$60.2K |
|
|
NEX
5110
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $206K | ﹤0.01% |
22,346
-8,071
| -27% | -$57.8K |
|
5111
Brookdale Senior Living
BKD
$3B
| $205K | ﹤0.01% |
29,102
-6,683
| -19% | -$40.8K |
|
5112
ProShares UltraShort FTSE China 50 of ProShares Trust
FXP
$6.18M
| $205K | ﹤0.01% |
+2,557
| New | +$210K |
|
|
NEWP
5113
PUT
New Pacific Metals
NEWP
$1.24B
| $205K | ﹤0.01% |
64,600
+48,500
| +301% | +$148K |
|
5114
CALL
XPEL
XPEL
$1.39B
| $205K | ﹤0.01% |
3,900
-500
| -11% | -$30.9K |
|
|
EVLO
5115
DELISTED
Evelo Biosciences, Inc. Common Stock
EVLO
| $205K | ﹤0.01% |
3,029
+1,424
| +89% | +$119K |
|
5116
PUT
National Beverage
FIZZ
$2.93B
| $204K | ﹤0.01% |
4,700
-12,800
| -73% | -$557K |
|
5117
iShares Russell 2000 Growth ETF
IWO
$15.1B
| $204K | ﹤0.01% |
800
-20,541
| -96% | -$5.26M |
|
5118
PUT
New Fortress Energy
NFE
$93M
| $204K | ﹤0.01% |
4,800
-1,300
| -21% | -$35.1K |
|
|
KDNY
5119
PUT
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
| $204K | ﹤0.01% |
12,500
+9,800
| +363% | +$133K |
|
|
GBT
5120
CALL
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $204K | ﹤0.01% |
5,900
-15,600
| -73% | -$466K |
|
5121
PUT
Vita Coco
COCO
$3.77B
| $203K | ﹤0.01% |
22,700
+21,600
| +1,964% | +$226K |
|
|
EB
5122
CALL
DELISTED
Eventbrite
EB
| $203K | ﹤0.01% |
13,800
-51,900
| -79% | -$769K |
|
5123
CALL
Energizer
ENR
$1.55B
| $203K | ﹤0.01% |
6,600
-11,900
| -64% | -$414K |
|
5124
PUT
Natera
NTRA
$44.8B
| $203K | ﹤0.01% |
5,000
+4,400
| +733% | +$264K |
|
5125
CALL
Terex
TEX
$7.57B
| $203K | ﹤0.01% |
5,700
+800
| +16% | +$33.1K |
|
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 1,602 new positions and adding to 4,440 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 1,602 new positions and closed 1,638 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.