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
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
CS
576
DELISTED
Credit Suisse Group
CS
| $617K | ﹤0.01% |
+48,257
| New | +$617K |
|
577
SolarEdge
SEDG
$1.75B
| $615K | ﹤0.01% |
1,930
-357
| -16% | -$114K |
|
578
Invesco CurrencyShares Australian Dollar Trust
FXA
$78.6M
| $609K | ﹤0.01% |
7,933
+3,670
| +86% | +$282K |
|
579
ALPS Clean Energy ETF
ACES
$91.6M
| $604K | ﹤0.01% |
7,545
+7,239
| +2,366% | +$580K |
|
580
United Microelectronic
UMC
$17.2B
| $602K | ﹤0.01% |
71,527
+41,393
| +137% | +$348K |
|
|
NLSN
581
DELISTED
Nielsen Holdings plc
NLSN
| $595K | ﹤0.01% |
28,543
+21,262
| +292% | +$443K |
|
582
Harmony Gold Mining
HMY
$9.62B
| $594K | ﹤0.01% |
127,006
+112,574
| +780% | +$527K |
|
583
Ormat Technologies
ORA
$5.51B
| $590K | ﹤0.01% |
6,543
+6,299
| +2,582% | +$568K |
|
|
AMRN
584
Amarin Corp
AMRN
$310M
| $587K | ﹤0.01% |
6,012
-6,116
| -50% | -$597K |
|
585
Coca-Cola Europacific Partners
CCEP
$40.4B
| $582K | ﹤0.01% |
11,684
+4,358
| +59% | +$217K |
|
586
Exelixis
EXEL
$10.1B
| $582K | ﹤0.01% |
29,000
+16,897
| +140% | +$339K |
|
|
AXNX
587
DELISTED
Axonics, Inc. Common Stock
AXNX
| $581K | ﹤0.01% |
11,648
+1,089
| +10% | +$54.3K |
|
588
Kura Oncology
KURA
$709M
| $579K | ﹤0.01% |
+17,746
| New | +$579K |
|
589
iShares US Basic Materials ETF
IYM
$563M
| $578K | ﹤0.01% |
5,101
+3,867
| +313% | +$438K |
|
590
ProShares Ultra Technology
ROM
$811M
| $578K | ﹤0.01% |
+16,152
| New | +$578K |
|
591
Agios Pharmaceuticals
AGIO
$2.07B
| $577K | ﹤0.01% |
13,337
+11,422
| +596% | +$494K |
|
592
Smith & Wesson
SWBI
$416M
| $577K | ﹤0.01% |
32,538
+15,900
| +96% | +$282K |
|
593
Teradata
TDC
$1.99B
| $577K | ﹤0.01% |
25,680
+20,313
| +378% | +$456K |
|
594
Alto Ingredients
ALTO
$89M
| $574K | ﹤0.01% |
105,738
+72,051
| +214% | +$391K |
|
595
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$3.45B
| $571K | ﹤0.01% |
9,014
+264
| +3% | +$16.7K |
|
596
Bausch Health
BHC
$2.64B
| $570K | ﹤0.01% |
27,447
+11,928
| +77% | +$248K |
|
|
QELL
597
DELISTED
Qell Acquisition Corp. Class A Ordinary Shares
QELL
| $570K | ﹤0.01% |
+46,400
| New | +$570K |
|
598
AGNC Investment
AGNC
$10.7B
| $569K | ﹤0.01% |
+36,532
| New | +$569K |
|
599
8x8 Inc
EGHT
$285M
| $567K | ﹤0.01% |
16,463
+9,912
| +151% | +$341K |
|
600
1-800-Flowers.com
FLWS
$326M
| $562K | ﹤0.01% |
21,617
+16,989
| +367% | +$442K |
|