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 | |
|---|---|---|---|---|---|---|
2301
PUT
Edison International
EIX
$30.7B
| $1.65M | ﹤0.01% |
23,500
-8,700
| -27% | -$556K |
|
2302
CALL
Kanzhun
BZ
$6.89B
| $1.65M | ﹤0.01% |
66,100
+61,400
| +1,306% | +$1.79M |
|
2303
CALL
Rapid7
RPD
$634M
| $1.65M | ﹤0.01% |
14,800
+10,500
| +244% | +$1.05M |
|
2304
CALL
Invesco Actively Managed Exch-Traded Commodity Fd Tr Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF
PDBC
$5.81B
| $1.65M | ﹤0.01% |
93,300
+83,500
| +852% | +$1.35M |
|
2305
CALL
Exelixis
EXEL
$13.9B
| $1.64M | ﹤0.01% |
72,500
+36,300
| +100% | +$709K |
|
2306
PUT
Arbor Realty Trust
ABR
$960M
| $1.64M | ﹤0.01% |
96,200
-1,200
| -1% | -$21.1K |
|
2307
CALL
Idexx Laboratories
IDXX
$42.9B
| $1.64M | ﹤0.01% |
3,000
+1,900
| +173% | +$999K |
|
2308
McKesson
MCK
$98.5B
| $1.64M | ﹤0.01% |
5,361
-1,365
| -20% | -$371K |
|
2309
Rivian
RIVN
$22.9B
| $1.64M | ﹤0.01% |
+32,658
| New | +$1.99M |
|
|
CRON
2310
PUT
Cronos Group
CRON
$1.05B
| $1.64M | ﹤0.01% |
421,100
+316,300
| +302% | +$1.15M |
|
2311
CALL
Dillards
DDS
$8.87B
| $1.64M | ﹤0.01% |
6,100
+200
| +3% | +$51.6K |
|
2312
PUT
PagerDuty
PD
$700M
| $1.64M | ﹤0.01% |
47,900
+28,700
| +149% | +$923K |
|
2313
Vipshop
VIPS
$6.84B
| $1.63M | ﹤0.01% |
+181,567
| New | +$1.6M |
|
2314
PUT
Lakeland Industries
LAKE
$106M
| $1.63M | ﹤0.01% |
85,000
-19,900
| -19% | -$397K |
|
2315
CALL
Reliance Steel & Aluminium
RS
$20.8B
| $1.63M | ﹤0.01% |
8,900
+7,400
| +493% | +$1.28M |
|
|
TWKS
2316
CALL
DELISTED
Thoughtworks Holding, Inc. Common Stock
TWKS
| $1.63M | ﹤0.01% |
78,200
+77,800
| +19,450% | +$1.7M |
|
2317
PUT
Omega Healthcare
OHI
$15.4B
| $1.63M | ﹤0.01% |
52,200
+6,900
| +15% | +$204K |
|
2318
CALL
LPL Financial
LPLA
$26.3B
| $1.63M | ﹤0.01% |
8,900
+5,300
| +147% | +$923K |
|
2319
PUT
Nasdaq
NDAQ
$51.5B
| $1.62M | ﹤0.01% |
27,300
-79,200
| -74% | -$4.69M |
|
2320
PUT
dLocal
DLO
$4.26B
| $1.62M | ﹤0.01% |
51,800
+35,900
| +226% | +$1.08M |
|
2321
CALL
Shutterstock
SSTK
$205M
| $1.62M | ﹤0.01% |
17,400
+6,200
| +55% | +$575K |
|
|
TBCH
2322
Turtle Beach Corp
TBCH
$239M
| $1.62M | ﹤0.01% |
76,009
+67,089
| +752% | +$1.4M |
|
2323
PUT
Martin Marietta Materials
MLM
$33.6B
| $1.62M | ﹤0.01% |
4,200
-8,400
| -67% | -$3.26M |
|
2324
Krispy Kreme
DNUT
$543M
| $1.61M | ﹤0.01% |
+108,803
| New | +$1.63M |
|
2325
CALL
Fox Class B
FOX
$20.7B
| $1.61M | ﹤0.01% |
41,800
-11,000
| -21% | -$409K |
|
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.