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 | |
|---|---|---|---|---|---|---|
|
RESI
526
DELISTED
Front Yard Residential Corporation Common Stock
RESI
| $332K | ﹤0.01% |
35,831
-112,684
| -76% | -$1.04M |
|
|
CLR
527
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $331K | ﹤0.01% |
+7,405
| New | +$331K |
|
528
Vermilion Energy
VET
$1.12B
| $325K | ﹤0.01% |
13,163
-4,672
| -26% | -$115K |
|
|
AUY
529
DELISTED
Yamana Gold, Inc.
AUY
| $325K | ﹤0.01% |
124,718
+116,068
| +1,342% | +$302K |
|
|
INFN
530
DELISTED
Infinera Corporation Common Stock
INFN
| $324K | ﹤0.01% |
74,677
+56,600
| +313% | +$246K |
|
531
Copart
CPRT
$47B
| $323K | ﹤0.01% |
21,340
+4,608
| +28% | +$69.7K |
|
532
Fate Therapeutics
FATE
$116M
| $323K | ﹤0.01% |
18,413
+10,019
| +119% | +$176K |
|
533
Savara
SVRA
$643M
| $323K | ﹤0.01% |
43,910
+38,913
| +779% | +$286K |
|
534
iShares Russell 3000 ETF
IWV
$16.7B
| $320K | ﹤0.01% |
+1,920
| New | +$320K |
|
|
PTR
535
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $320K | ﹤0.01% |
4,892
-10,464
| -68% | -$684K |
|
536
Stride
LRN
$7.01B
| $317K | ﹤0.01% |
9,302
-93
| -1% | -$3.17K |
|
|
GWPH
537
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $314K | ﹤0.01% |
1,866
-1,890
| -50% | -$318K |
|
538
California Water Service
CWT
$2.81B
| $313K | ﹤0.01% |
5,783
+5,623
| +3,514% | +$304K |
|
|
JNPR
539
DELISTED
Juniper Networks
JNPR
| $313K | ﹤0.01% |
+11,854
| New | +$313K |
|
540
Puma Biotechnology
PBYI
$253M
| $311K | ﹤0.01% |
8,031
-26,685
| -77% | -$1.03M |
|
|
LFC
541
DELISTED
China Life Insurance Company Ltd.
LFC
| $311K | ﹤0.01% |
23,223
+18,604
| +403% | +$249K |
|
542
Federal Realty Investment Trust
FRT
$8.86B
| $307K | ﹤0.01% |
2,231
+2,062
| +1,220% | +$284K |
|
543
Goodyear
GT
$2.43B
| $307K | ﹤0.01% |
16,936
-36,873
| -69% | -$668K |
|
544
Intellia Therapeutics
NTLA
$1.29B
| $307K | ﹤0.01% |
18,029
+14,361
| +392% | +$245K |
|
545
Newell Brands
NWL
$2.68B
| $307K | ﹤0.01% |
+20,061
| New | +$307K |
|
546
iShares National Muni Bond ETF
MUB
$38.9B
| $306K | ﹤0.01% |
+2,757
| New | +$306K |
|
547
Voyager Therapeutics
VYGR
$235M
| $306K | ﹤0.01% |
16,016
+15,918
| +16,243% | +$304K |
|
548
LendingTree
TREE
$978M
| $304K | ﹤0.01% |
+867
| New | +$304K |
|
549
Waste Management
WM
$88.6B
| $302K | ﹤0.01% |
2,907
-14,822
| -84% | -$1.54M |
|
550
Usana Health Sciences
USNA
$581M
| $301K | ﹤0.01% |
3,600
+32
| +0.9% | +$2.68K |
|