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 | |
|---|---|---|---|---|---|---|
8501
Bank of Hawaii
BOH
$3.14B
| $15K | ﹤0.01% |
179
+91
| +103% | +$7.86K |
|
|
STEX
8502
CALL
Streamex Corp
STEX
$71.8M
| $15K | ﹤0.01% |
1,340
-2,220
| -62% | -$35.5K |
|
8503
PUT
China Automotive Systems
CAAS
$131M
| $15K | ﹤0.01% |
5,000
+2,500
| +100% | +$6.79K |
|
8504
Cibus
CBUS
$148M
| $15K | ﹤0.01% |
292
+129
| +79% | +$9.63K |
|
8505
PUT
Corbus Pharmaceuticals
CRBP
$165M
| $15K | ﹤0.01% |
1,000
-1,030
| -51% | -$13.6K |
|
8506
CALL
Crescent Energy
CRGY
$3.65B
| $15K | ﹤0.01% |
900
-73,200
| -99% | -$1.08M |
|
8507
Dropbox
DBX
$7.78B
| $15K | ﹤0.01% |
+658
| New | +$15.3K |
|
|
DCBO
8508
PUT
Docebo
DCBO
$559M
| $15K | ﹤0.01% |
300
+200
| +200% | +$10.3K |
|
|
DOYU
8509
DouYu International Holdings
DOYU
$140M
| $15K | ﹤0.01% |
734
-5,989
| -89% | -$132K |
|
|
FARM
8510
DELISTED
Farmer Brothers
FARM
| $15K | ﹤0.01% |
+2,199
| New | +$14.3K |
|
8511
CALL
FTI Consulting
FCN
$5.14B
| $15K | ﹤0.01% |
100
-100
| -50% | -$14.9K |
|
8512
CALL
CGI
GIB
$15.6B
| $15K | ﹤0.01% |
200
-500
| -71% | -$41.6K |
|
8513
PUT
Gray Television
GTN
$437M
| $15K | ﹤0.01% |
700
-80,300
| -99% | -$1.77M |
|
8514
PUT
Fusion Fuel Green
HTOO
$8.51M
| $15K | ﹤0.01% |
51
+11
| +28% | +$2.77K |
|
8515
PUT
Innodata
INOD
$1.81B
| $15K | ﹤0.01% |
2,200
-3,100
| -58% | -$18.2K |
|
8516
iShares Russell Top 200 Growth ETF
IWY
$15.2B
| $15K | ﹤0.01% |
+100
| New | +$15.6K |
|
|
JFIN
8517
Jiayin Group
JFIN
$115M
| $15K | ﹤0.01% |
5,618
+3,479
| +163% | +$7.77K |
|
8518
LGI Homes
LGIH
$1.35B
| $15K | ﹤0.01% |
158
+77
| +95% | +$9.51K |
|
8519
PUT
Lantern Pharma
LTRN
$32M
| $15K | ﹤0.01% |
2,200
| – | – |
|
8520
CALL
First Trust Exchange-Traded Fund VI Multi-Asset Diversified Income Index Fund
MDIV
$431M
| $15K | ﹤0.01% |
+500
| New | +$8.34K |
|
8521
Medpace
MEDP
$16.3B
| $15K | ﹤0.01% |
96
-662
| -87% | -$109K |
|
|
RJET
8522
PUT
Republic Airways Holdings
RJET
$845M
| $15K | ﹤0.01% |
240
-513
| -68% | -$36.8K |
|
8523
Milestone Scientific
MLSS
$33.3M
| $15K | ﹤0.01% |
10,364
-1,651
| -14% | -$2.41K |
|
8524
Marcus & Millichap
MMI
$1.2B
| $15K | ﹤0.01% |
+291
| New | +$13.9K |
|
8525
PUT
Movado Group
MOV
$840M
| $15K | ﹤0.01% |
400
-900
| -69% | -$34.1K |
|
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 1,603 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.