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 | |
|---|---|---|---|---|---|---|
|
LX
676
LexinFintech Holdings
LX
$976M
| $472K | ﹤0.01% |
70,481
+13,625
| +24% | +$91.2K |
|
677
TG Therapeutics
TGTX
$5.11B
| $472K | ﹤0.01% |
9,076
-37,745
| -81% | -$1.96M |
|
678
ProShares Short Dow30
DOG
$121M
| $470K | ﹤0.01% |
12,008
-3,441
| -22% | -$135K |
|
679
B2Gold
BTG
$5.89B
| $467K | ﹤0.01% |
83,553
+44,303
| +113% | +$248K |
|
680
Omega Healthcare
OHI
$12.6B
| $466K | ﹤0.01% |
12,838
-1,747
| -12% | -$63.4K |
|
681
Alarm.com
ALRM
$2.79B
| $465K | ﹤0.01% |
4,495
-4,590
| -51% | -$475K |
|
682
Cencora
COR
$58.5B
| $465K | ﹤0.01% |
4,766
-4,261
| -47% | -$416K |
|
683
American Woodmark
AMWD
$981M
| $463K | ﹤0.01% |
+4,937
| New | +$463K |
|
684
Bank of New York Mellon
BK
$74.8B
| $463K | ﹤0.01% |
10,911
-116,786
| -91% | -$4.96M |
|
685
ProShares Ultra Bloomberg Natural Gas
BOIL
$123M
| $463K | ﹤0.01% |
220
+218
| +10,900% | +$459K |
|
686
Fortune Brands Innovations
FBIN
$7.24B
| $462K | ﹤0.01% |
6,311
+6,145
| +3,702% | +$450K |
|
687
Direxion Daily Real Estate Bull 3X Shares
DRN
$66.5M
| $460K | ﹤0.01% |
36,428
+13,969
| +62% | +$176K |
|
688
Packaging Corp of America
PKG
$19.5B
| $456K | ﹤0.01% |
+3,307
| New | +$456K |
|
689
Vipshop
VIPS
$9.03B
| $456K | ﹤0.01% |
16,254
-56,631
| -78% | -$1.59M |
|
690
Baxter International
BAX
$12.5B
| $454K | ﹤0.01% |
5,659
+2,939
| +108% | +$236K |
|
691
ODP
ODP
$640M
| $454K | ﹤0.01% |
+15,518
| New | +$454K |
|
692
Mattel
MAT
$5.78B
| $452K | ﹤0.01% |
25,935
-106,310
| -80% | -$1.85M |
|
693
Williams-Sonoma
WSM
$25B
| $451K | ﹤0.01% |
8,876
-23,246
| -72% | -$1.18M |
|
694
iShares MSCI Hong Kong ETF
EWH
$740M
| $450K | ﹤0.01% |
18,297
-21,656
| -54% | -$533K |
|
695
National Grid
NGG
$70.2B
| $449K | ﹤0.01% |
8,482
-28,870
| -77% | -$1.53M |
|
696
AdvisorShares Pure US Cannabis ETF
MSOS
$813M
| $447K | ﹤0.01% |
+12,254
| New | +$447K |
|
697
PPL Corp
PPL
$26.5B
| $446K | ﹤0.01% |
15,850
+5,339
| +51% | +$150K |
|
698
SiriusXM
SIRI
$7.94B
| $445K | ﹤0.01% |
6,987
-25
| -0.4% | -$1.59K |
|
699
Sterling Infrastructure
STRL
$9.54B
| $444K | ﹤0.01% |
23,879
+17,193
| +257% | +$320K |
|
700
Curis
CRIS
$22.6M
| $442K | ﹤0.01% |
2,698
+2,634
| +4,116% | +$432K |
|