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 |
Amazon
AMZN
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
976
Globalstar
GSAT
$3.94B
| $64K | ﹤0.01% |
2,619
+2,458
| +1,527% | +$60.1K |
|
977
Natural Resource Partners
NRP
$1.35B
| $64K | ﹤0.01% |
2,594
+1,894
| +271% | +$46.7K |
|
|
SFUN
978
DELISTED
Fang Holdings Limited American Depositary Shares (each representing ten Class A Ordinary Shares)
SFUN
| $64K | ﹤0.01% |
317
+98
| +45% | +$19.8K |
|
|
PFPT
979
DELISTED
Proofpoint, Inc.
PFPT
| $64K | ﹤0.01% |
745
-1,557
| -68% | -$134K |
|
|
CRZO
980
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $64K | ﹤0.01% |
3,790
+268
| +8% | +$4.53K |
|
|
DF
981
DELISTED
Dean Foods Company
DF
| $64K | ﹤0.01% |
5,941
+3,858
| +185% | +$41.6K |
|
982
Citizens
CIA
$273M
| $63K | ﹤0.01% |
+8,623
| New | +$63K |
|
983
Genesco
GCO
$355M
| $63K | ﹤0.01% |
2,371
+852
| +56% | +$22.6K |
|
|
IMOS
984
ChipMOS TECHNOLOGIES
IMOS
$629M
| $63K | ﹤0.01% |
2,786
+1,691
| +154% | +$38.2K |
|
985
Red Rock Resorts
RRR
$3.66B
| $63K | ﹤0.01% |
+2,761
| New | +$63K |
|
986
Scansource
SCSC
$948M
| $63K | ﹤0.01% |
+1,460
| New | +$63K |
|
987
VirnetX
VHC
$74.6M
| $63K | ﹤0.01% |
814
+438
| +116% | +$33.9K |
|
988
ProShares UltraShort Silver
ZSL
$19.8M
| $63K | ﹤0.01% |
121
+91
| +303% | +$47.4K |
|
|
LKM
989
DELISTED
Link Motion Inc.
LKM
| $63K | ﹤0.01% |
18,108
+10,944
| +153% | +$38.1K |
|
|
WBT
990
DELISTED
Welbilt, Inc.
WBT
| $62K | ﹤0.01% |
+2,706
| New | +$62K |
|
991
BCE
BCE
$22.5B
| $62K | ﹤0.01% |
+1,336
| New | +$62K |
|
992
Bright Horizons
BFAM
$6.36B
| $62K | ﹤0.01% |
+721
| New | +$62K |
|
993
Big 5 Sporting Goods
BGFV
$32.5M
| $62K | ﹤0.01% |
8,132
-8,634
| -51% | -$65.8K |
|
994
Federal Realty Investment Trust
FRT
$8.67B
| $62K | ﹤0.01% |
504
-458
| -48% | -$56.3K |
|
|
XHR
995
Xenia Hotels & Resorts
XHR
$1.38B
| $62K | ﹤0.01% |
2,988
+1,982
| +197% | +$41.1K |
|
|
GZT
996
DELISTED
Gazit-globe Ltd
GZT
| $62K | ﹤0.01% |
+6,513
| New | +$62K |
|
997
Galectin Therapeutics
GALT
$320M
| $61K | ﹤0.01% |
+28,687
| New | +$61K |
|
998
HealthEquity
HQY
$7.88B
| $61K | ﹤0.01% |
1,218
+610
| +100% | +$30.6K |
|
999
Smith & Wesson
SWBI
$416M
| $61K | ﹤0.01% |
5,248
+877
| +20% | +$10.2K |
|
|
MACK
1000
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $61K | ﹤0.01% |
5,352
-10,413
| -66% | -$119K |
|