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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
United Microelectronic
UMC
$17.1B
| $883K | ﹤0.01% |
97,008
+25,481
| +36% | +$232K |
|
452
Molson Coors Class B
TAP
$9.96B
| $882K | ﹤0.01% |
17,248
+16,448
| +2,056% | +$841K |
|
453
InMode
INMD
$947M
| $879K | ﹤0.01% |
24,312
+21,690
| +827% | +$784K |
|
454
Televisa
TV
$1.56B
| $878K | ﹤0.01% |
+99,129
| New | +$878K |
|
455
Atmos Energy
ATO
$26.7B
| $877K | ﹤0.01% |
+8,882
| New | +$877K |
|
456
Amplify Alternative Harvest ETF
MJ
$183M
| $876K | ﹤0.01% |
3,190
+2,943
| +1,191% | +$808K |
|
457
Lithia Motors
LAD
$8.74B
| $871K | ﹤0.01% |
2,233
-1,199
| -35% | -$468K |
|
458
Northrop Grumman
NOC
$83.2B
| $865K | ﹤0.01% |
+2,675
| New | +$865K |
|
459
Invesco Senior Loan ETF
BKLN
$6.98B
| $863K | ﹤0.01% |
+39,012
| New | +$863K |
|
460
Team
TISI
$86.4M
| $863K | ﹤0.01% |
7,491
-470
| -6% | -$54.1K |
|
|
SOL
461
Emeren Group
SOL
$96.5M
| $860K | ﹤0.01% |
69,750
-14,040
| -17% | -$173K |
|
462
Spruce Power Holding Corp
SPRU
$27.3M
| $857K | ﹤0.01% |
11,937
+8,478
| +245% | +$609K |
|
463
Vail Resorts
MTN
$5.87B
| $856K | ﹤0.01% |
+2,935
| New | +$856K |
|
|
ZEV
464
DELISTED
Lightning eMotors, Inc.
ZEV
| $856K | ﹤0.01% |
4,015
-219
| -5% | -$46.7K |
|
465
Knowles
KN
$1.85B
| $848K | ﹤0.01% |
40,537
+10,617
| +35% | +$222K |
|
466
National Vision
EYE
$1.86B
| $847K | ﹤0.01% |
+19,335
| New | +$847K |
|
467
ACM Research
ACMR
$1.76B
| $846K | ﹤0.01% |
+31,440
| New | +$846K |
|
468
Antero Resources
AR
$10.1B
| $845K | ﹤0.01% |
+82,871
| New | +$845K |
|
469
Omeros
OMER
$284M
| $843K | ﹤0.01% |
47,392
-22,021
| -32% | -$392K |
|
470
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.2B
| $843K | ﹤0.01% |
2,186
-1,755
| -45% | -$677K |
|
|
NOVA
471
DELISTED
Sunnova Energy
NOVA
| $842K | ﹤0.01% |
20,641
+5,358
| +35% | +$219K |
|
472
Alamos Gold
AGI
$13.5B
| $840K | ﹤0.01% |
107,589
-71,947
| -40% | -$562K |
|
473
B. Riley Financial
RILY
$152M
| $839K | ﹤0.01% |
+14,888
| New | +$839K |
|
|
FTOC
474
DELISTED
FTAC Olympus Acquisition Corp. Class A Ordinary Shares
FTOC
| $837K | ﹤0.01% |
+79,216
| New | +$837K |
|
475
Affiliated Managers Group
AMG
$6.62B
| $836K | ﹤0.01% |
5,614
-4,180
| -43% | -$622K |
|