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 | |
|---|---|---|---|---|---|---|
3651
UDR
UDR
$12.8B
| $577K | ﹤0.01% |
+10,074
| New | +$572K |
|
3652
CALL
Upland Software
UPLD
$13.1M
| $577K | ﹤0.01% |
3,280
+3,080
| +1,540% | +$565K |
|
|
SLI
3653
PUT
Standard Lithium
SLI
$519M
| $576K | ﹤0.01% |
65,500
+38,100
| +139% | +$258K |
|
|
CODX
3654
PUT
Co-Diagnostics
CODX
$7.52M
| $575K | ﹤0.01% |
3,103
-160
| -5% | -$33.1K |
|
3655
Direxion Daily Financial Bull 3x ETF
FAS
$2.43B
| $575K | ﹤0.01% |
4,896
-17,597
| -78% | -$2.23M |
|
3656
PUT
Lamb Weston
LW
$7.3B
| $575K | ﹤0.01% |
9,600
-37,200
| -79% | -$2.31M |
|
3657
CALL
New Fortress Energy
NFE
$96.4M
| $575K | ﹤0.01% |
13,500
+11,200
| +487% | +$302K |
|
|
STR
3658
CALL
DELISTED
Sitio Royalties
STR
| $575K | ﹤0.01% |
21,350
+17,150
| +408% | +$387K |
|
|
MRTX
3659
CALL
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $575K | ﹤0.01% |
7,000
-9,900
| -59% | -$1.01M |
|
3660
Archer Aviation
ACHR
$3.78B
| $574K | ﹤0.01% |
119,369
+115,885
| +3,326% | +$426K |
|
3661
iShares MSCI Hong Kong ETF
EWH
$1.23B
| $574K | ﹤0.01% |
25,447
-9,119
| -26% | -$212K |
|
|
TVTY
3662
DELISTED
Tivity Health, Inc. Common Stock
TVTY
| $574K | ﹤0.01% |
+17,857
| New | +$483K |
|
3663
PUT
Independence Realty Trust
IRT
$3.87B
| $573K | ﹤0.01% |
21,700
+8,900
| +70% | +$218K |
|
3664
CALL
Aterian
ATER
$3.91M
| $572K | ﹤0.01% |
19,650
+11,425
| +139% | +$418K |
|
3665
CALL
CDW
CDW
$17.6B
| $572K | ﹤0.01% |
3,200
+3,000
| +1,500% | +$549K |
|
3666
CALL
Greif
GEF
$4.56B
| $572K | ﹤0.01% |
8,800
| – | – |
|
3667
Suburban Propane Partners
SPH
$1.21B
| $572K | ﹤0.01% |
35,567
-25,744
| -42% | -$390K |
|
3668
CALL
Textron
TXT
$16.7B
| $572K | ﹤0.01% |
7,700
-200
| -3% | -$14.4K |
|
|
EFOR
3669
PUT
Everforth Inc
EFOR
$884M
| $571K | ﹤0.01% |
4,900
-3,400
| -41% | -$385K |
|
3670
CALL
Green Dot
GDOT
$746M
| $571K | ﹤0.01% |
20,800
+8,300
| +66% | +$252K |
|
3671
PUT
Prospect Capital
PSEC
$1.12B
| $571K | ﹤0.01% |
69,000
+45,700
| +196% | +$380K |
|
3672
CALL
Flowers Foods
FLO
$1.62B
| $570K | ﹤0.01% |
22,200
-74,700
| -77% | -$2.03M |
|
3673
PUT
Rogers Corp
ROG
$2.31B
| $570K | ﹤0.01% |
2,100
-600
| -22% | -$164K |
|
3674
PUT
SiTime
SITM
$15.7B
| $569K | ﹤0.01% |
2,300
-700
| -23% | -$152K |
|
|
LILM
3675
CALL
DELISTED
Lilium N.V. Class A Ordinary Shares
LILM
| $569K | ﹤0.01% |
143,100
+41,800
| +41% | +$193K |
|
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.