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 | |
|---|---|---|---|---|---|---|
4126
TaskUs
TASK
$568M
| $403K | ﹤0.01% |
+10,504
| New | +$370K |
|
4127
CALL
Fathom Holdings
FTHM
$28.5M
| $402K | ﹤0.01% |
37,600
+37,100
| +7,420% | +$515K |
|
4128
iShares Core S&P Small-Cap ETF
IJR
$110B
| $402K | ﹤0.01% |
+3,732
| New | +$403K |
|
4129
CALL
Protolabs
PRLB
$1.78B
| $402K | ﹤0.01% |
7,600
-39,700
| -84% | -$2.09M |
|
4130
Zedge
ZDGE
$38.4M
| $402K | ﹤0.01% |
+66,112
| New | +$467K |
|
4131
HSBC
HSBC
$356B
| $401K | ﹤0.01% |
11,730
-44,625
| -79% | -$1.54M |
|
4132
CALL
Newegg Commerce
NEGG
$295M
| $401K | ﹤0.01% |
3,175
+1,790
| +129% | +$231K |
|
4133
PUT
RLX Technology
RLX
$2.43B
| $401K | ﹤0.01% |
224,100
-62,800
| -22% | -$187K |
|
4134
PUT
Grab
GRAB
$14.1B
| $400K | ﹤0.01% |
114,400
-6,800
| -6% | -$34.4K |
|
4135
CALL
Rush Street Interactive
RSI
$3.16B
| $400K | ﹤0.01% |
55,100
-6,500
| -11% | -$65.5K |
|
4136
CALL
Zai Lab
ZLAB
$2.1B
| $400K | ﹤0.01% |
9,100
+2,700
| +42% | +$131K |
|
4137
PUT
Angi Inc
ANGI
$252M
| $399K | ﹤0.01% |
7,050
+5,030
| +249% | +$367K |
|
4138
PUT
Commercial Metals
CMC
$7.8B
| $399K | ﹤0.01% |
9,600
+8,800
| +1,100% | +$331K |
|
4139
Global X US Infrastructure Development ETF
PAVE
$14.1B
| $399K | ﹤0.01% |
14,128
-6,393
| -31% | -$174K |
|
|
PBFX
4140
PUT
DELISTED
PBF LOGISTICS LP
PBFX
| $399K | ﹤0.01% |
28,500
+23,400
| +459% | +$311K |
|
|
CCC
4141
CCC Intelligent Solutions
CCC
$3.59B
| $398K | ﹤0.01% |
+36,079
| New | +$379K |
|
4142
PUT
Cogent Communications
CCOI
$649M
| $398K | ﹤0.01% |
6,000
+5,200
| +650% | +$334K |
|
4143
CALL
Gladstone Investment Corp
GAIN
$655M
| $398K | ﹤0.01% |
24,700
+13,800
| +127% | +$217K |
|
|
INN
4144
CALL
Summit Hotel Properties
INN
$743M
| $398K | ﹤0.01% |
40,000
+1,800
| +5% | +$17.7K |
|
4145
PUT
Matsons
MATX
$6.15B
| $398K | ﹤0.01% |
3,300
+2,700
| +450% | +$272K |
|
|
AHT
4146
PUT
Ashford Hospitality Trust
AHT
$20.9M
| $397K | ﹤0.01% |
3,900
-280
| -7% | -$25K |
|
4147
CALL
Clearway Energy Class C
CWEN
$4.9B
| $397K | ﹤0.01% |
11,400
-100
| -0.9% | -$3.4K |
|
4148
Trex
TREX
$4.57B
| $397K | ﹤0.01% |
6,085
+773
| +15% | +$68.8K |
|
|
NATI
4149
CALL
DELISTED
National Instruments Corp
NATI
| $397K | ﹤0.01% |
9,800
+9,400
| +2,350% | +$379K |
|
|
RIDE
4150
PUT
DELISTED
Lordstown Motors Corp. Class A Common Stock
RIDE
| $397K | ﹤0.01% |
7,780
+3,253
| +72% | +$141K |
|
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.