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 | |
|---|---|---|---|---|---|---|
6626
PUT
Genesis Energy
GEL
$1.89B
| $71K | ﹤0.01% |
6,100
+800
| +15% | +$9.33K |
|
6627
Idacorp
IDA
$8.32B
| $71K | ﹤0.01% |
623
-183
| -23% | -$19.9K |
|
|
IMMP
6628
Immutep
IMMP
$56.1M
| $71K | ﹤0.01% |
25,941
-27,469
| -51% | -$77.8K |
|
6629
CALL
Comstock
LODE
$229M
| $71K | ﹤0.01% |
4,300
-1,020
| -19% | -$15.7K |
|
6630
MarketWise
MKTW
$53.6M
| $71K | ﹤0.01% |
755
+406
| +116% | +$44.2K |
|
6631
Sterling Infrastructure
STRL
$18.8B
| $71K | ﹤0.01% |
2,660
+1,243
| +88% | +$34.7K |
|
6632
Vishay Intertechnology
VSH
$5.43B
| $71K | ﹤0.01% |
+3,627
| New | +$73.1K |
|
|
NBIS
6633
CALL
Nebius Group N.V.
NBIS
$54B
| $71K | ﹤0.01% |
142,100
-75,400
| -35% | -$3.58M |
|
|
PDCO
6634
PUT
DELISTED
Patterson Companies, Inc.
PDCO
| $71K | ﹤0.01% |
2,200
+1,000
| +83% | +$29.7K |
|
|
DOOR
6635
PUT
DELISTED
MASONITE INTERNATIONAL CORP
DOOR
| $71K | ﹤0.01% |
800
-200
| -20% | -$19.8K |
|
|
AFIB
6636
DELISTED
Acutus Medical Inc
AFIB
| $71K | ﹤0.01% |
51,607
+26,659
| +107% | +$57K |
|
|
EBET
6637
DELISTED
EBET, INC. Common Stock
EBET
| $71K | ﹤0.01% |
+354
| New | +$110K |
|
|
SEV
6638
DELISTED
Sono Group N.V. Common Shares
SEV
| $71K | ﹤0.01% |
13,361
+7,243
| +118% | +$43K |
|
|
MNRL
6639
PUT
DELISTED
Brigham Minerals, Inc. Class A Common Stock
MNRL
| $71K | ﹤0.01% |
2,800
+2,600
| +1,300% | +$60.3K |
|
|
GCP
6640
DELISTED
GCP Applied Technologies Inc.
GCP
| $71K | ﹤0.01% |
2,285
-19,220
| -89% | -$609K |
|
6641
PUT
Ardelyx
ARDX
$1.23B
| $70K | ﹤0.01% |
66,000
-18,300
| -22% | -$16.3K |
|
6642
PUT
Blend Labs
BLND
$467M
| $70K | ﹤0.01% |
12,400
+7,900
| +176% | +$61.2K |
|
6643
Celanese
CE
$4.81B
| $70K | ﹤0.01% |
490
-1,080
| -69% | -$165K |
|
6644
CALL
DoubleVerify
DV
$1.8B
| $70K | ﹤0.01% |
2,800
-12,900
| -82% | -$336K |
|
6645
PUT
Essential Properties Realty Trust
EPRT
$6.74B
| $70K | ﹤0.01% |
2,800
+1,300
| +87% | +$33.5K |
|
6646
CALL
Five Point Holdings
FPH
$368M
| $70K | ﹤0.01% |
11,500
-4,700
| -29% | -$28.8K |
|
6647
PUT
Kingstone Companies
KINS
$292M
| $70K | ﹤0.01% |
+13,200
| New | +$69.6K |
|
6648
KULR Technology Group
KULR
$129M
| $70K | ﹤0.01% |
4,066
-1,087
| -21% | -$20.2K |
|
6649
PUT
OceanFirst Financial
OCFC
$1.71B
| $70K | ﹤0.01% |
+3,500
| New | +$78K |
|
6650
CALL
ONE Gas
OGS
$4.92B
| $70K | ﹤0.01% |
800
-400
| -33% | -$32.2K |
|
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.