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
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
USCR
676
DELISTED
U S Concrete, Inc.
USCR
| $195K | ﹤0.01% |
4,723
+1,789
| +61% | +$73.9K |
|
|
AMRS
677
DELISTED
Amyris Inc.
AMRS
| $194K | ﹤0.01% |
92,887
+46,274
| +99% | +$96.6K |
|
|
LCI
678
DELISTED
Lannett Company, Inc.
LCI
| $194K | ﹤0.01% |
+6,174
| New | +$194K |
|
679
Invesco Golden Dragon China ETF
PGJ
$152M
| $192K | ﹤0.01% |
4,759
+4,043
| +565% | +$163K |
|
|
JO
680
DELISTED
iPath Series B Bloomberg Coffee Subindex Total ReturnSM ETN
JO
| $191K | ﹤0.01% |
5,650
+1,942
| +52% | +$65.7K |
|
|
LOMA
681
Loma Negra
LOMA
$932M
| $189K | ﹤0.01% |
17,316
+13,530
| +357% | +$148K |
|
682
MakeMyTrip
MMYT
$9.53B
| $189K | ﹤0.01% |
6,864
+1,447
| +27% | +$39.8K |
|
683
Insulet
PODD
$24.6B
| $189K | ﹤0.01% |
+1,995
| New | +$189K |
|
|
SNR
684
DELISTED
NEW SENIOR INVESTMENT GROUP INC.
SNR
| $189K | ﹤0.01% |
+34,860
| New | +$189K |
|
|
GMLP
685
DELISTED
Golar LNG Partners LP
GMLP
| $188K | ﹤0.01% |
14,634
-1,232
| -8% | -$15.8K |
|
|
AMID
686
DELISTED
American Midstream Partners, LP
AMID
| $188K | ﹤0.01% |
36,455
+14,488
| +66% | +$74.7K |
|
687
Forte Biosciences
FBRX
$138M
| $187K | ﹤0.01% |
46
+35
| +318% | +$142K |
|
688
Axsome Therapeutics
AXSM
$6.45B
| $186K | ﹤0.01% |
13,097
+12,697
| +3,174% | +$180K |
|
689
Emergent Biosolutions
EBS
$403M
| $186K | ﹤0.01% |
+3,685
| New | +$186K |
|
690
Ducommun
DCO
$1.36B
| $185K | ﹤0.01% |
4,270
+4,233
| +11,441% | +$183K |
|
|
LN
691
DELISTED
LINE Corporation
LN
| $185K | ﹤0.01% |
5,263
+4,776
| +981% | +$168K |
|
|
VNTR
692
DELISTED
Venator Materials PLC
VNTR
| $184K | ﹤0.01% |
32,867
-3,817
| -10% | -$21.4K |
|
|
MFA
693
MFA Financial
MFA
$1.06B
| $183K | ﹤0.01% |
6,323
+2,263
| +56% | +$65.5K |
|
694
Allogene Therapeutics
ALLO
$253M
| $182K | ﹤0.01% |
6,305
+6,188
| +5,289% | +$179K |
|
695
Stitch Fix
SFIX
$744M
| $181K | ﹤0.01% |
6,424
+4,171
| +185% | +$118K |
|
|
RST
696
DELISTED
ROSETTA STONE INC
RST
| $180K | ﹤0.01% |
+8,283
| New | +$180K |
|
697
Popular Inc
BPOP
$8.48B
| $179K | ﹤0.01% |
3,451
+2,147
| +165% | +$111K |
|
698
Gyre Therapeutics
GYRE
$717M
| $177K | ﹤0.01% |
2,918
-798
| -21% | -$48.4K |
|
699
United Natural Foods
UNFI
$1.74B
| $176K | ﹤0.01% |
+13,341
| New | +$176K |
|
|
CASA
700
DELISTED
Casa Systems, Inc. Common Stock
CASA
| $176K | ﹤0.01% |
21,271
-15,308
| -42% | -$127K |
|