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 | |
|---|---|---|---|---|---|---|
6826
CALL
Kennametal
KMT
$2.59B
| $62K | ﹤0.01% |
2,200
-2,500
| -53% | -$82.2K |
|
6827
KRONOS Worldwide
KRO
$693M
| $62K | ﹤0.01% |
+4,019
| New | +$59.7K |
|
6828
Grand Canyon Education
LOPE
$3.79B
| $62K | ﹤0.01% |
+645
| New | +$56.5K |
|
6829
Intellia Therapeutics
NTLA
$1.49B
| $62K | ﹤0.01% |
860
-1,483
| -63% | -$126K |
|
6830
CALL
Repay Holdings
RPAY
$331M
| $62K | ﹤0.01% |
4,200
+1,600
| +62% | +$26.4K |
|
6831
PUT
Ryan Specialty Holdings
RYAN
$5.72B
| $62K | ﹤0.01% |
+1,600
| New | +$60.8K |
|
|
UXIN
6832
Uxin Ltd
UXIN
$306M
| $62K | ﹤0.01% |
608
+270
| +80% | +$30.8K |
|
6833
CALL
Valaris
VAL
$5.48B
| $62K | ﹤0.01% |
+1,200
| New | +$51.9K |
|
6834
CALL
Woodward
WWD
$21.3B
| $62K | ﹤0.01% |
500
| – | – |
|
6835
X4 Pharmaceuticals
XFOR
$375M
| $62K | ﹤0.01% |
1,189
+1,012
| +572% | +$58K |
|
|
ENZ
6836
PUT
DELISTED
Enzo Biochem, Inc.
ENZ
| $62K | ﹤0.01% |
21,700
-5,600
| -21% | -$18K |
|
|
DOOR
6837
CALL
DELISTED
MASONITE INTERNATIONAL CORP
DOOR
| $62K | ﹤0.01% |
700
-2,500
| -78% | -$247K |
|
|
SP
6838
PUT
DELISTED
SP Plus Corporation
SP
| $62K | ﹤0.01% |
2,000
-19,700
| -91% | -$570K |
|
6839
CorMedix
CRMD
$591M
| $61K | ﹤0.01% |
11,178
+4,270
| +62% | +$19.6K |
|
6840
CALL
Capital Southwest
CSWC
$1.47B
| $61K | ﹤0.01% |
2,600
+1,000
| +63% | +$24.5K |
|
6841
iShares MSCI China Small-Cap ETF
ECNS
$64.9M
| $61K | ﹤0.01% |
+1,547
| New | +$67.9K |
|
6842
PUT
Evergy
EVRG
$19.1B
| $61K | ﹤0.01% |
900
+100
| +13% | +$6.45K |
|
6843
PUT
Ezcorp Inc
EZPW
$1.83B
| $61K | ﹤0.01% |
10,200
+4,700
| +85% | +$29.3K |
|
6844
Grid Dynamics Holdings
GDYN
$559M
| $61K | ﹤0.01% |
4,374
+3,977
| +1,002% | +$81.3K |
|
6845
PUT
Kopin
KOPN
$652M
| $61K | ﹤0.01% |
24,300
+3,700
| +18% | +$10.6K |
|
6846
Legend Biotech
LEGN
$3.59B
| $61K | ﹤0.01% |
+1,681
| New | +$66.4K |
|
6847
PUT
Moelis & Co
MC
$4.97B
| $61K | ﹤0.01% |
1,300
+1,100
| +550% | +$57.2K |
|
6848
CALL
Oppenheimer Holdings
OPY
$1.14B
| $61K | ﹤0.01% |
1,400
+400
| +40% | +$17.5K |
|
6849
Invesco Golden Dragon China ETF
PGJ
$98.9M
| $61K | ﹤0.01% |
+2,130
| New | +$69.3K |
|
6850
CALL
Prelude Therapeutics
PRLD
$366M
| $61K | ﹤0.01% |
8,900
+3,800
| +75% | +$34.8K |
|
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.