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 | |
|---|---|---|---|---|---|---|
6101
PUT
Douglas Elliman
DOUG
$154M
| $102K | ﹤0.01% |
+14,700
| New | +$112K |
|
6102
CALL
Descartes Systems
DSGX
$6.44B
| $102K | ﹤0.01% |
1,400
+800
| +133% | +$57.7K |
|
6103
PUT
Emergent Biosolutions
EBS
$373M
| $102K | ﹤0.01% |
2,500
-2,300
| -48% | -$101K |
|
|
EVRI
6104
DELISTED
Everi Holdings
EVRI
| $102K | ﹤0.01% |
4,859
+69
| +1% | +$1.47K |
|
6105
CALL
M/I Homes
MHO
$3.74B
| $102K | ﹤0.01% |
2,300
-2,000
| -47% | -$102K |
|
|
MTLS
6106
CALL
Materialise
MTLS
$368M
| $102K | ﹤0.01% |
5,300
+1,000
| +23% | +$20.1K |
|
6107
CALL
Provident Financial Services
PFS
$3.22B
| $102K | ﹤0.01% |
4,400
-4,100
| -48% | -$98.6K |
|
6108
PUT
Primoris Services
PRIM
$4.58B
| $102K | ﹤0.01% |
4,300
+2,900
| +207% | +$74.7K |
|
6109
PUT
Robert Half
RHI
$3.87B
| $102K | ﹤0.01% |
900
+300
| +50% | +$34.6K |
|
6110
STMicroelectronics
STM
$46.7B
| $102K | ﹤0.01% |
+2,366
| New | +$105K |
|
|
CNR
6111
Core Natural Resources Inc
CNR
$4.02B
| $102K | ﹤0.01% |
2,718
-7,542
| -74% | -$219K |
|
|
BRDS
6112
DELISTED
Bird Global, Inc.
BRDS
| $102K | ﹤0.01% |
+1,679
| New | +$149K |
|
|
AVYA
6113
PUT
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $102K | ﹤0.01% |
8,100
-8,300
| -51% | -$129K |
|
|
AGEN
6114
PUT
Agenus
AGEN
$312M
| $101K | ﹤0.01% |
2,094
-866
| -29% | -$46.8K |
|
6115
Assured Guaranty
AGO
$3.66B
| $101K | ﹤0.01% |
+1,599
| New | +$91.7K |
|
|
BLUE
6116
DELISTED
bluebird bio
BLUE
| $101K | ﹤0.01% |
1,041
-1,104
| -51% | -$146K |
|
6117
PUT
Broadwind
BWEN
$93.6M
| $101K | ﹤0.01% |
47,000
+1,300
| +3% | +$2.53K |
|
|
CIVI
6118
PUT
DELISTED
Civitas Resources
CIVI
| $101K | ﹤0.01% |
1,700
+1,200
| +240% | +$65.2K |
|
6119
CALL
Consolidated Water Co
CWCO
$467M
| $101K | ﹤0.01% |
9,200
+4,100
| +80% | +$41.5K |
|
6120
CALL
Flotek Industries
FTK
$852M
| $101K | ﹤0.01% |
13,450
+9,183
| +215% | +$65.5K |
|
|
HITI
6121
PUT
High Tide
HITI
$186M
| $101K | ﹤0.01% |
22,300
+12,000
| +117% | +$53.8K |
|
6122
PUT
Mativ Holdings
MATV
$481M
| $101K | ﹤0.01% |
3,700
-1,300
| -26% | -$39.2K |
|
6123
Nektar Therapeutics
NKTR
$2.39B
| $101K | ﹤0.01% |
+1,260
| New | +$186K |
|
6124
PUT
NerdWallet
NRDS
$592M
| $101K | ﹤0.01% |
8,500
+1,300
| +18% | +$16.7K |
|
6125
Nexstar Media Group
NXST
$5.82B
| $101K | ﹤0.01% |
+539
| New | +$93.7K |
|
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.