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 | |
|---|---|---|---|---|---|---|
6001
ProShares UltraShort Russell2000
TWM
$44.3M
| $110K | ﹤0.01% |
1,538
+1,259
| +451% | +$94.6K |
|
6002
VF Corp
VFC
$5.63B
| $110K | ﹤0.01% |
1,936
+454
| +31% | +$28.2K |
|
6003
PUT
Xenon Pharmaceuticals
XENE
$6.06B
| $110K | ﹤0.01% |
3,600
-32,600
| -90% | -$976K |
|
|
YALA
6004
PUT
Yalla Group
YALA
$818M
| $110K | ﹤0.01% |
24,700
+15,700
| +174% | +$90.6K |
|
|
NPKI
6005
CALL
NPK International
NPKI
$1.06B
| $110K | ﹤0.01% |
30,200
+28,300
| +1,489% | +$105K |
|
|
BRMK
6006
PUT
DELISTED
Broadmark Realty Capital Inc. Common Stock
BRMK
| $110K | ﹤0.01% |
12,800
+9,900
| +341% | +$88.3K |
|
6007
CALL
First Trust Water ETF
FIW
$1.85B
| $109K | ﹤0.01% |
+1,300
| New | +$109K |
|
6008
PUT
Hillman Solutions
HLMN
$1.54B
| $109K | ﹤0.01% |
9,200
+1,600
| +21% | +$15.7K |
|
6009
PUT
Liquidia Corp
LQDA
$7.48B
| $109K | ﹤0.01% |
15,200
+8,600
| +130% | +$54.1K |
|
6010
Sinclair Inc
SBGI
$992M
| $109K | ﹤0.01% |
3,899
-1,325
| -25% | -$36.8K |
|
6011
CALL
SkyWater Technology
SKYT
| $109K | ﹤0.01% |
10,100
+2,100
| +26% | +$23.1K |
|
6012
GeneDx Holdings
WGS
$1.93B
| $109K | ﹤0.01% |
1,078
+799
| +286% | +$88.8K |
|
6013
PUT
Atomera
ATOM
$200M
| $108K | ﹤0.01% |
8,300
+2,900
| +54% | +$43.4K |
|
6014
CALL
Capricor Therapeutics
CAPR
$223M
| $108K | ﹤0.01% |
31,500
+20,100
| +176% | +$79.3K |
|
|
CLSD
6015
PUT
DELISTED
Clearside Biomedical
CLSD
| $108K | ﹤0.01% |
3,160
+1,713
| +118% | +$51.3K |
|
6016
CALL
CareTrust REIT
CTRE
$9.91B
| $108K | ﹤0.01% |
5,600
-1,100
| -16% | -$21.7K |
|
6017
CALL
EverQuote
EVER
$892M
| $108K | ﹤0.01% |
6,700
-3,100
| -32% | -$46.9K |
|
6018
CALL
Fulton Financial
FULT
$4.66B
| $108K | ﹤0.01% |
6,500
+3,200
| +97% | +$57.2K |
|
6019
Greif
GEF
$4.92B
| $108K | ﹤0.01% |
1,672
+1,655
| +9,735% | +$98.9K |
|
6020
Galicia Financial Group
GGAL
$7.99B
| $108K | ﹤0.01% |
10,042
-59,572
| -86% | -$575K |
|
6021
Genco Shipping & Trading
GNK
$1.11B
| $108K | ﹤0.01% |
4,610
-9,924
| -68% | -$184K |
|
6022
Kaltura
KLTR
$206M
| $108K | ﹤0.01% |
+60,630
| New | +$167K |
|
6023
PUT
Leslie's
LESL
$8.9M
| $108K | ﹤0.01% |
280
-1,410
| -83% | -$586K |
|
|
MRSN
6024
PUT
DELISTED
Mersana Therapeutics
MRSN
| $108K | ﹤0.01% |
+1,088
| New | +$127K |
|
6025
CALL
uniQure
QURE
$3.03B
| $108K | ﹤0.01% |
6,000
-42,800
| -88% | -$747K |
|
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.