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 | |
|---|---|---|---|---|---|---|
|
GOLD
3451
CALL
Gold.com Inc
GOLD
$1.19B
| $665K | ﹤0.01% |
17,200
+15,200
| +760% | +$519K |
|
|
JNPR
3452
PUT
DELISTED
Juniper Networks
JNPR
| $665K | ﹤0.01% |
17,900
-179,700
| -91% | -$6.18M |
|
3453
CALL
Axcelis
ACLS
$3.94B
| $664K | ﹤0.01% |
8,800
+4,100
| +87% | +$280K |
|
3454
PUT
Keysight
KEYS
$53.6B
| $663K | ﹤0.01% |
4,200
-12,000
| -74% | -$2M |
|
3455
Sensient Technologies
SXT
$5.32B
| $663K | ﹤0.01% |
+7,899
| New | +$666K |
|
3456
PUT
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $663K | ﹤0.01% |
4,900
-2,300
| -32% | -$160K |
|
|
NSTG
3457
PUT
DELISTED
NanoString Technologies, Inc.
NSTG
| $663K | ﹤0.01% |
+19,100
| New | +$658K |
|
3458
Innoviz Technologies
INVZ
$139M
| $662K | ﹤0.01% |
182,908
-81,868
| -31% | -$327K |
|
|
SDC
3459
CALL
DELISTED
SmileDirectClub, Inc. Class A Common Stock
SDC
| $662K | ﹤0.01% |
255,900
-141,100
| -36% | -$327K |
|
3460
PUT
Energy Vault
NRGV
$531M
| $661K | ﹤0.01% |
+41,600
| New | +$474K |
|
|
JOBS
3461
CALL
DELISTED
51job Inc
JOBS
| $661K | ﹤0.01% |
11,300
+10,900
| +2,725% | +$558K |
|
3462
CALL
Aecom
ACM
$9.12B
| $660K | ﹤0.01% |
8,600
-32,400
| -79% | -$2.38M |
|
3463
PUT
Adtran
ADTN
$769M
| $660K | ﹤0.01% |
35,800
-2,200
| -6% | -$43.6K |
|
3464
CALL
Cerence
CRNC
$375M
| $660K | ﹤0.01% |
18,300
+9,700
| +113% | +$478K |
|
3465
Element Solutions
ESI
$9.22B
| $660K | ﹤0.01% |
30,144
-37,415
| -55% | -$862K |
|
3466
CALL
Skywest
SKYW
$4.37B
| $660K | ﹤0.01% |
22,900
+4,800
| +27% | +$157K |
|
3467
Watsco Inc
WSO
$15B
| $660K | ﹤0.01% |
2,169
+910
| +72% | +$260K |
|
|
VSTO
3468
CALL
DELISTED
Vista Outdoor Inc.
VSTO
| $660K | ﹤0.01% |
18,500
-9,900
| -35% | -$383K |
|
3469
CALL
The Greenbrier Companies
GBX
$1.56B
| $659K | ﹤0.01% |
12,800
+5,600
| +78% | +$252K |
|
3470
PUT
Village Farms International
VFF
$247M
| $659K | ﹤0.01% |
124,900
+120,700
| +2,874% | +$648K |
|
3471
Wells Fargo
WFC
$264B
| $659K | ﹤0.01% |
13,618
-392,056
| -97% | -$21M |
|
|
LOGC
3472
PUT
DELISTED
ContextLogic
LOGC
| $659K | ﹤0.01% |
9,763
-11,394
| -54% | -$804K |
|
3473
CALL
Edison International
EIX
$30.3B
| $658K | ﹤0.01% |
9,400
+3,800
| +68% | +$243K |
|
|
VXRT
3474
PUT
DELISTED
Vaxart
VXRT
| $658K | ﹤0.01% |
130,600
+96,500
| +283% | +$489K |
|
3475
PUT
CoreCivic
CXW
$3.09B
| $657K | ﹤0.01% |
58,900
-91,200
| -61% | -$892K |
|
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.