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 | |
|---|---|---|---|---|---|---|
|
FOLD
5976
CALL
DELISTED
Amicus Therapeutics
FOLD
| $112K | ﹤0.01% |
11,900
-12,600
| -51% | -$118K |
|
5977
Golar LNG
GLNG
$5B
| $112K | ﹤0.01% |
4,548
-4,161
| -48% | -$68.7K |
|
5978
GXO Logistics
GXO
$5.77B
| $112K | ﹤0.01% |
1,575
-1,247
| -44% | -$99.6K |
|
|
HUYA
5979
Huya Inc
HUYA
$563M
| $112K | ﹤0.01% |
25,258
+1,663
| +7% | +$9.55K |
|
5980
CALL
Maximus
MMS
$3.17B
| $112K | ﹤0.01% |
1,500
-600
| -29% | -$45.9K |
|
5981
Progress Software
PRGS
$1.66B
| $112K | ﹤0.01% |
+2,383
| New | +$107K |
|
5982
CALL
Pixelworks
PXLW
$38.2M
| $112K | ﹤0.01% |
3,150
-658
| -17% | -$26.1K |
|
5983
CALL
QuickLogic
QUIK
$232M
| $112K | ﹤0.01% |
20,400
+13,700
| +204% | +$69.7K |
|
5984
Unisys
UIS
$209M
| $112K | ﹤0.01% |
+5,213
| New | +$106K |
|
|
REV
5985
PUT
DELISTED
Revlon, Inc.
REV
| $112K | ﹤0.01% |
14,000
+7,200
| +106% | +$68.9K |
|
5986
Concrete Pumping Holdings
BBCP
$490M
| $111K | ﹤0.01% |
16,576
+14,957
| +924% | +$115K |
|
5987
CALL
Cathay General Bancorp
CATY
$4.22B
| $111K | ﹤0.01% |
+2,500
| New | +$115K |
|
5988
iShares Mortgage Real Estate ETF
REM
$539M
| $111K | ﹤0.01% |
3,416
-17,187
| -83% | -$566K |
|
5989
Global X Social Media ETF
SOCL
$90.4M
| $111K | ﹤0.01% |
2,639
-8,530
| -76% | -$392K |
|
5990
PUT
Sypris Solutions
SYPR
$42.8M
| $111K | ﹤0.01% |
41,400
+40,600
| +5,075% | +$95.3K |
|
5991
CALL
United Bankshares
UBSI
$6.63B
| $111K | ﹤0.01% |
3,200
+3,000
| +1,500% | +$109K |
|
|
ACC
5992
CALL
DELISTED
American Campus Communities, Inc.
ACC
| $111K | ﹤0.01% |
2,000
+900
| +82% | +$48.2K |
|
|
ACC
5993
PUT
DELISTED
American Campus Communities, Inc.
ACC
| $111K | ﹤0.01% |
2,000
+1,900
| +1,900% | +$102K |
|
5994
Boise Cascade
BCC
$2.69B
| $110K | ﹤0.01% |
1,589
-4,637
| -74% | -$349K |
|
5995
PUT
Citi Trends
CTRN
$555M
| $110K | ﹤0.01% |
3,600
-700
| -16% | -$32.7K |
|
5996
Dorman Products
DORM
$3.98B
| $110K | ﹤0.01% |
+1,167
| New | +$113K |
|
5997
PUT
Fossil Group
FOSL
$293M
| $110K | ﹤0.01% |
11,500
-109,000
| -90% | -$1.24M |
|
5998
CALL
Innoviz Technologies
INVZ
$95M
| $110K | ﹤0.01% |
30,500
+8,800
| +41% | +$35.2K |
|
5999
VanEck Steel ETF
SLX
$169M
| $110K | ﹤0.01% |
1,631
-7,208
| -82% | -$426K |
|
6000
PUT
Spire Global
SPIR
$444M
| $110K | ﹤0.01% |
6,588
-4,575
| -41% | -$89.4K |
|
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.