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
| 1 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1901
Kemper
KMPR
$3.3B
| $12K | ﹤0.01% |
+160
| New | +$12K |
|
1902
ProShares Online Retail ETF
ONLN
$86.2M
| $12K | ﹤0.01% |
+160
| New | +$12K |
|
1903
ProQR Therapeutics
PRQR
$210M
| $12K | ﹤0.01% |
2,987
+2,971
| +18,569% | +$11.9K |
|
1904
Prudential
PUK
$35.9B
| $12K | ﹤0.01% |
345
-1,503
| -81% | -$52.3K |
|
1905
Tanger
SKT
$3.83B
| $12K | ﹤0.01% |
+1,233
| New | +$12K |
|
1906
Spotify
SPOT
$145B
| $12K | ﹤0.01% |
41
-17,612
| -100% | -$5.15M |
|
|
ITI
1907
DELISTED
Iteris, Inc.
ITI
| $12K | ﹤0.01% |
2,252
-14,826
| -87% | -$79K |
|
|
VIVO
1908
DELISTED
Meridian Bioscience Inc
VIVO
| $12K | ﹤0.01% |
+645
| New | +$12K |
|
|
RRD
1909
DELISTED
RR Donnelley & Sons Co.
RRD
| $12K | ﹤0.01% |
+5,642
| New | +$12K |
|
|
VRTU
1910
DELISTED
Virtusa Corporation
VRTU
| $12K | ﹤0.01% |
+252
| New | +$12K |
|
|
EBIX
1911
DELISTED
Ebix Inc
EBIX
| $12K | ﹤0.01% |
+320
| New | +$12K |
|
1912
Alpha Pro Tech
APT
$50.7M
| $11K | ﹤0.01% |
1,041
-14,067
| -93% | -$149K |
|
1913
Capital Southwest
CSWC
$1.24B
| $11K | ﹤0.01% |
632
+39
| +7% | +$679 |
|
1914
Enlivex Therapeutics
ENLV
$25.3M
| $11K | ﹤0.01% |
+1,388
| New | +$11K |
|
1915
Hooker Furnishings Corp
HOFT
$107M
| $11K | ﹤0.01% |
359
-64
| -15% | -$1.96K |
|
1916
Jacobs Solutions
J
$17.5B
| $11K | ﹤0.01% |
126
-261
| -67% | -$22.8K |
|
1917
Martin Midstream Partners
MMLP
$121M
| $11K | ﹤0.01% |
8,014
-5,765
| -42% | -$7.91K |
|
1918
Monroe Capital Corp
MRCC
$164M
| $11K | ﹤0.01% |
1,374
-477
| -26% | -$3.82K |
|
1919
Microsoft
MSFT
$3.83T
| $11K | ﹤0.01% |
50
-2,762
| -98% | -$608K |
|
1920
First Trust NASDAQ Clean Edge Green Energy Index Fund
QCLN
$465M
| $11K | ﹤0.01% |
+160
| New | +$11K |
|
1921
Quantum Corp
QMCO
$105M
| $11K | ﹤0.01% |
92
+15
| +19% | +$1.79K |
|
1922
Spero Therapeutics
SPRO
$106M
| $11K | ﹤0.01% |
+606
| New | +$11K |
|
1923
Strategic Education
STRA
$1.94B
| $11K | ﹤0.01% |
125
-638
| -84% | -$56.1K |
|
1924
iShares Exponential Technologies ETF
XT
$3.59B
| $11K | ﹤0.01% |
204
+200
| +5,000% | +$10.8K |
|
|
ERF
1925
DELISTED
Enerplus Corporation
ERF
| $11K | ﹤0.01% |
3,643
-58,143
| -94% | -$176K |
|