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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TPIC
651
DELISTED
TPI Composites
TPIC
| $218K | ﹤0.01% |
8,841
+8,779
| +14,160% | +$216K |
|
652
Village Farms International
VFF
$282M
| $218K | ﹤0.01% |
19,082
+10,637
| +126% | +$122K |
|
653
Fate Therapeutics
FATE
$118M
| $217K | ﹤0.01% |
10,730
-7,683
| -42% | -$155K |
|
654
NCR Voyix
VYX
$1.8B
| $217K | ﹤0.01% |
11,417
-43,820
| -79% | -$833K |
|
|
SCTL
655
DELISTED
Societal CDMO, Inc. Common Stock
SCTL
| $217K | ﹤0.01% |
23,863
+2,500
| +12% | +$22.7K |
|
656
Essex Property Trust
ESS
$17.3B
| $215K | ﹤0.01% |
+737
| New | +$215K |
|
657
Lamar Advertising Co
LAMR
$13B
| $215K | ﹤0.01% |
+2,672
| New | +$215K |
|
658
Advanced Micro Devices
AMD
$253B
| $214K | ﹤0.01% |
7,063
-74,934
| -91% | -$2.27M |
|
659
WisdomTree
WT
$2.08B
| $214K | ﹤0.01% |
34,735
+3,186
| +10% | +$19.6K |
|
|
DCP
660
DELISTED
DCP Midstream, LP
DCP
| $214K | ﹤0.01% |
7,335
-9,712
| -57% | -$283K |
|
|
AZUL
661
DELISTED
Azul
AZUL
| $213K | ﹤0.01% |
+6,395
| New | +$213K |
|
|
BOLD
662
DELISTED
Audentes Therapeutics, Inc
BOLD
| $213K | ﹤0.01% |
+5,642
| New | +$213K |
|
663
Altice USA
ATUS
$1.14B
| $212K | ﹤0.01% |
+8,737
| New | +$212K |
|
|
AMRS
664
DELISTED
Amyris Inc.
AMRS
| $210K | ﹤0.01% |
59,181
-33,706
| -36% | -$120K |
|
665
Community Health Systems
CYH
$420M
| $209K | ﹤0.01% |
78,591
+78,448
| +54,859% | +$209K |
|
666
Semtech
SMTC
$5.29B
| $208K | ﹤0.01% |
4,334
+3,406
| +367% | +$163K |
|
667
Ametek
AME
$44.4B
| $207K | ﹤0.01% |
2,282
-9,418
| -80% | -$854K |
|
668
Consolidated Edison
ED
$35.2B
| $207K | ﹤0.01% |
2,364
-12,966
| -85% | -$1.14M |
|
669
National Vision
EYE
$1.84B
| $207K | ﹤0.01% |
+6,756
| New | +$207K |
|
670
F5
FFIV
$19.2B
| $207K | ﹤0.01% |
1,427
+827
| +138% | +$120K |
|
|
PVG
671
DELISTED
PRETIUM RESOURCES INC.
PVG
| $206K | ﹤0.01% |
20,639
-12,278
| -37% | -$123K |
|
672
Eldorado Gold
EGO
$5.62B
| $204K | ﹤0.01% |
35,123
+31,587
| +893% | +$183K |
|
673
MBIA
MBI
$386M
| $203K | ﹤0.01% |
21,886
-24,864
| -53% | -$231K |
|
674
BJs Wholesale Club
BJ
$12.9B
| $199K | ﹤0.01% |
7,562
+7,347
| +3,417% | +$193K |
|
675
Direxion Daily Real Estate Bull 3X Shares
DRN
$67.3M
| $198K | ﹤0.01% |
7,859
+6,201
| +374% | +$156K |
|