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
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
Ormat Technologies
ORA
$5.51B
| $197K | 0.01% |
3,365
+58
| +2% | +$3.4K |
|
652
Brunswick
BC
$4.23B
| $196K | 0.01% |
3,131
+693
| +28% | +$43.4K |
|
|
SGYP
653
DELISTED
Synergy Pharmaceuticals, Inc Common Stock
SGYP
| $196K | 0.01% |
44,266
-38,229
| -46% | -$169K |
|
654
Jakks Pacific
JAKK
$195M
| $195K | 0.01% |
4,898
+4,436
| +960% | +$177K |
|
|
IMPV
655
DELISTED
Imperva, Inc.
IMPV
| $195K | 0.01% |
+4,089
| New | +$195K |
|
656
DTE Energy
DTE
$28.2B
| $191K | 0.01% |
+2,128
| New | +$191K |
|
657
Vanguard Value ETF
VTV
$144B
| $191K | 0.01% |
+1,981
| New | +$191K |
|
|
WDR
658
DELISTED
Waddell & Reed Financial, Inc.
WDR
| $191K | 0.01% |
10,147
-5,287
| -34% | -$99.5K |
|
|
TCP
659
DELISTED
TC Pipelines LP
TCP
| $191K | 0.01% |
+3,475
| New | +$191K |
|
|
SUM
660
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $190K | 0.01% |
6,789
-85,683
| -93% | -$2.4M |
|
|
ZYNE
661
DELISTED
Zynerba Pharmaceuticals, Inc
ZYNE
| $189K | 0.01% |
11,196
-12,064
| -52% | -$204K |
|
662
KLA
KLAC
$123B
| $188K | 0.01% |
2,063
-8,457
| -80% | -$771K |
|
663
National Storage Affiliates Trust
NSA
$2.45B
| $187K | 0.01% |
+8,128
| New | +$187K |
|
|
VLRS
664
Controladora Vuela Compañía de Aviación
VLRS
$712M
| $185K | 0.01% |
12,754
-17,423
| -58% | -$253K |
|
665
Korn Ferry
KFY
$3.81B
| $184K | 0.01% |
+5,329
| New | +$184K |
|
666
Flex
FLEX
$21.7B
| $182K | 0.01% |
+14,848
| New | +$182K |
|
667
Scorpio Tankers
STNG
$2.92B
| $182K | 0.01% |
4,599
+2,297
| +100% | +$90.9K |
|
668
Amplify Cybersecurity ETF
HACK
$2.32B
| $181K | 0.01% |
+6,035
| New | +$181K |
|
669
Impinj
PI
$5.53B
| $181K | 0.01% |
+3,737
| New | +$181K |
|
670
Steelcase
SCS
$1.92B
| $181K | 0.01% |
+12,988
| New | +$181K |
|
671
Silicon Motion
SIMO
$2.84B
| $181K | 0.01% |
3,758
+2,425
| +182% | +$117K |
|
672
Wintrust Financial
WTFC
$9.17B
| $180K | 0.01% |
+2,355
| New | +$180K |
|
|
SHLX
673
DELISTED
Shell Midstream Partners, L.P.
SHLX
| $180K | 0.01% |
5,954
+5,529
| +1,301% | +$167K |
|
|
WLL
674
DELISTED
Whiting Petroleum Corporation
WLL
| $180K | 0.01% |
109
-229
| -68% | -$378K |
|
675
Enanta Pharmaceuticals
ENTA
$178M
| $178K | 0.01% |
+4,953
| New | +$178K |
|