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 | |
|---|---|---|---|---|---|---|
7101
PUT
Viking Therapeutics
VKTX
$3.7B
| $51K | ﹤0.01% |
17,100
-14,500
| -46% | -$52K |
|
|
XNET
7102
CALL
Xunlei
XNET
$340M
| $51K | ﹤0.01% |
29,500
+700
| +2% | +$1.21K |
|
|
CBAY
7103
PUT
DELISTED
Cymabay Therapeutics
CBAY
| $51K | ﹤0.01% |
16,600
+11,600
| +232% | +$36.5K |
|
|
PACW
7104
CALL
DELISTED
PacWest Bancorp
PACW
| $51K | ﹤0.01% |
1,200
+1,000
| +500% | +$47.2K |
|
|
KLR
7105
PUT
DELISTED
Kaleyra, Inc.
KLR
| $51K | ﹤0.01% |
2,457
-6,914
| -74% | -$192K |
|
|
APEN
7106
DELISTED
Apollo Endosurgery, Inc.
APEN
| $51K | ﹤0.01% |
+8,470
| New | +$51.6K |
|
|
MUDS
7107
PUT
DELISTED
Mudrick Capital Acquisition Corporation II Class A Common Stock
MUDS
| $51K | ﹤0.01% |
5,100
+4,000
| +364% | +$40K |
|
|
HBP
7108
CALL
DELISTED
Huttig Building Products, Inc.
HBP
| $51K | ﹤0.01% |
4,800
+500
| +12% | +$4.78K |
|
7109
CALL
Civista Bancshares
CIVB
$604M
| $50K | ﹤0.01% |
2,100
+600
| +40% | +$14.6K |
|
7110
Clearwater Paper
CLW
$339M
| $50K | ﹤0.01% |
1,818
-6,395
| -78% | -$201K |
|
7111
CALL
Cyclerion Therapeutics
CYCN
$14.9M
| $50K | ﹤0.01% |
2,295
+415
| +22% | +$10K |
|
7112
CALL
Duluth Holdings
DLTH
$155M
| $50K | ﹤0.01% |
4,100
-700
| -15% | -$9.79K |
|
7113
PUT
Evolus
EOLS
$385M
| $50K | ﹤0.01% |
4,500
-38,400
| -90% | -$327K |
|
7114
Edgewell Personal Care
EPC
$1.25B
| $50K | ﹤0.01% |
1,367
-2,689
| -66% | -$110K |
|
|
EXK
7115
Endeavour Silver
EXK
$2.23B
| $50K | ﹤0.01% |
10,829
-276
| -2% | -$1.2K |
|
7116
CALL
Genasys
GNSS
$76.1M
| $50K | ﹤0.01% |
18,500
+6,600
| +55% | +$22.5K |
|
7117
CALL
Herc Holdings
HRI
$5.02B
| $50K | ﹤0.01% |
300
-6,600
| -96% | -$1.04M |
|
7118
PUT
JELD-WEN Holding
JELD
$122M
| $50K | ﹤0.01% |
+2,500
| New | +$58.9K |
|
7119
L3Harris
LHX
$51.6B
| $50K | ﹤0.01% |
204
-782
| -79% | -$182K |
|
7120
CALL
Insperity
NSP
$1.93B
| $50K | ﹤0.01% |
+500
| New | +$49.8K |
|
7121
CALL
Oaktree Specialty Lending
OCSL
$1.02B
| $50K | ﹤0.01% |
2,267
+900
| +66% | +$20.1K |
|
7122
CALL
Retractable Technologies
RVP
$19.8M
| $50K | ﹤0.01% |
10,700
+3,400
| +47% | +$17.6K |
|
7123
CALL
Sabesp
SBS
$19.1B
| $50K | ﹤0.01% |
26,298
+13,922
| +112% | +$20.5K |
|
|
SEM
7124
PUT
DELISTED
Select Medical
SEM
| $50K | ﹤0.01% |
+3,898
| New | +$51.5K |
|
|
SII
7125
CALL
Sprott
SII
$2.66B
| $50K | ﹤0.01% |
1,000
-4,200
| -81% | -$174K |
|
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.