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 |
Apple
AAPL
|
+$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$82.5M |
| 3 |
Intel
INTC
|
+$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
+$39.4M |
| 5 |
Uber
UBER
|
+$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$130M |
| 2 |
Pinduoduo
PDD
|
+$95.7M |
| 3 |
Boeing
BA
|
+$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$40.7M |
| 5 |
Microsoft
MSFT
|
+$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
Adient
ADNT
$1.95B
| $533K | ﹤0.01% |
+30,979
| New | +$533K |
|
627
Chord Energy
CHRD
$5.95B
| $532K | ﹤0.01% |
+4,551
| New | +$532K |
|
628
Allot
ALLT
$399M
| $530K | ﹤0.01% |
89,211
+27,703
| +45% | +$165K |
|
629
Alpha Metallurgical Resources
AMR
$1.84B
| $529K | ﹤0.01% |
+2,646
| New | +$529K |
|
630
Bausch Health
BHC
$2.67B
| $529K | ﹤0.01% |
65,657
-132,937
| -67% | -$1.07M |
|
631
Quantum Computing Inc
QUBT
$2.43B
| $526K | ﹤0.01% |
31,808
+18,204
| +134% | +$301K |
|
632
Ambarella
AMBA
$3.59B
| $524K | ﹤0.01% |
7,206
-2,805
| -28% | -$204K |
|
633
Brookfield Renewable
BEPC
$6.05B
| $524K | ﹤0.01% |
18,964
+13,105
| +224% | +$362K |
|
|
SII
634
Sprott
SII
$1.77B
| $524K | ﹤0.01% |
+12,433
| New | +$524K |
|
635
American Superconductor
AMSC
$2.22B
| $522K | ﹤0.01% |
21,212
-2,983
| -12% | -$73.4K |
|
636
Iovance Biotherapeutics
IOVA
$854M
| $521K | ﹤0.01% |
70,453
-85,119
| -55% | -$629K |
|
637
Ryan Specialty Holdings
RYAN
$6.78B
| $521K | ﹤0.01% |
8,130
+262
| +3% | +$16.8K |
|
638
Fifth Third Bancorp
FITB
$30B
| $519K | ﹤0.01% |
+12,290
| New | +$519K |
|
639
Direxion Daily FTSE China Bear 3X Shares
YANG
$171M
| $517K | ﹤0.01% |
7,399
+2,576
| +53% | +$180K |
|
640
Webster Financial
WBS
$10.2B
| $512K | ﹤0.01% |
9,287
+2,537
| +38% | +$140K |
|
641
Bumble
BMBL
$680M
| $511K | ﹤0.01% |
62,883
-12,011
| -16% | -$97.6K |
|
642
Nkarta
NKTX
$146M
| $510K | ﹤0.01% |
204,994
+202,461
| +7,993% | +$504K |
|
643
Magnite
MGNI
$3.52B
| $509K | ﹤0.01% |
31,987
-56,172
| -64% | -$894K |
|
644
SPDR Portfolio S&P 500 ETF
SPLG
$84.6B
| $508K | ﹤0.01% |
+7,372
| New | +$508K |
|
645
Kimberly-Clark
KMB
$43.2B
| $507K | ﹤0.01% |
3,871
-5,188
| -57% | -$679K |
|
646
Imperial Petroleum
IMPP
$133M
| $505K | ﹤0.01% |
167,866
-445,645
| -73% | -$1.34M |
|
647
Geron
GERN
$868M
| $504K | ﹤0.01% |
+142,582
| New | +$504K |
|
648
Coca-Cola Europacific Partners
CCEP
$41.5B
| $502K | ﹤0.01% |
+6,536
| New | +$502K |
|
649
Jefferies Financial Group
JEF
$13.3B
| $501K | ﹤0.01% |
6,397
+3,488
| +120% | +$273K |
|
650
Liberty Media Series C
FWONK
$25.1B
| $498K | ﹤0.01% |
+5,380
| New | +$498K |
|