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 | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
TG Therapeutics
TGTX
$5.11B
| $210K | ﹤0.01% |
26,146
-11,512
| -31% | -$92.5K |
|
|
AYR
652
DELISTED
Aircastle Limited
AYR
| $210K | ﹤0.01% |
10,422
+9,302
| +831% | +$187K |
|
653
Unisys
UIS
$277M
| $209K | ﹤0.01% |
17,933
+9,496
| +113% | +$111K |
|
654
HDFC Bank
HDB
$361B
| $208K | ﹤0.01% |
3,600
+3,114
| +641% | +$180K |
|
655
MacroGenics
MGNX
$126M
| $208K | ﹤0.01% |
11,588
+11,500
| +13,068% | +$206K |
|
|
MOMO
656
Hello Group
MOMO
$1.37B
| $208K | ﹤0.01% |
5,442
-4,997
| -48% | -$191K |
|
657
Murphy USA
MUSA
$7.47B
| $208K | ﹤0.01% |
2,430
+1,432
| +143% | +$123K |
|
658
Werner Enterprises
WERN
$1.71B
| $207K | ﹤0.01% |
+6,076
| New | +$207K |
|
659
IMAX
IMAX
$1.6B
| $206K | ﹤0.01% |
+9,084
| New | +$206K |
|
660
Owens Corning
OC
$13B
| $206K | ﹤0.01% |
4,391
+1,942
| +79% | +$91.1K |
|
|
ATCO
661
DELISTED
Atlas Corp.
ATCO
| $206K | ﹤0.01% |
23,695
+14,035
| +145% | +$122K |
|
|
NVRO
662
DELISTED
NEVRO CORP.
NVRO
| $205K | ﹤0.01% |
3,284
-3,697
| -53% | -$231K |
|
663
Ezcorp Inc
EZPW
$1.02B
| $203K | ﹤0.01% |
+21,783
| New | +$203K |
|
|
RUSS
664
DELISTED
Direxion Daily Russia Bear 3x Shares
RUSS
| $203K | ﹤0.01% |
13,537
+13,507
| +45,023% | +$203K |
|
665
Copa Holdings
CPA
$4.85B
| $202K | ﹤0.01% |
2,517
+1,416
| +129% | +$114K |
|
666
iShares MSCI Spain ETF
EWP
$1.36B
| $202K | ﹤0.01% |
7,076
-14,564
| -67% | -$416K |
|
667
VanEck Steel ETF
SLX
$83M
| $202K | ﹤0.01% |
5,053
+4,982
| +7,017% | +$199K |
|
668
TD Synnex
SNX
$12.3B
| $202K | ﹤0.01% |
+4,238
| New | +$202K |
|
669
Timken Company
TKR
$5.42B
| $202K | ﹤0.01% |
+4,640
| New | +$202K |
|
|
TWOU
670
DELISTED
2U, Inc.
TWOU
| $202K | ﹤0.01% |
+95
| New | +$202K |
|
671
CarGurus
CARG
$3.59B
| $198K | ﹤0.01% |
+4,948
| New | +$198K |
|
672
Vanguard Total World Stock ETF
VT
$51.8B
| $197K | ﹤0.01% |
+2,697
| New | +$197K |
|
673
Service Corp International
SCI
$10.9B
| $196K | ﹤0.01% |
+4,904
| New | +$196K |
|
|
CAI
674
DELISTED
CAI International, Inc.
CAI
| $196K | ﹤0.01% |
8,454
+4,460
| +112% | +$103K |
|
|
COHR
675
DELISTED
Coherent Inc
COHR
| $195K | ﹤0.01% |
1,377
-1,259
| -48% | -$178K |
|