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
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Allison Transmission
ALSN
$7.52B
| $679K | ﹤0.01% |
+12,041
| New | +$679K |
|
477
Ally Financial
ALLY
$12.7B
| $678K | ﹤0.01% |
25,106
-1,848
| -7% | -$49.9K |
|
478
Jabil
JBL
$22.4B
| $678K | ﹤0.01% |
6,284
-17,950
| -74% | -$1.94M |
|
|
AKTS
479
DELISTED
AKOUSTIS TECHNOLOGIES, INC.
AKTS
| $678K | ﹤0.01% |
213,299
-30,582
| -13% | -$97.2K |
|
480
Barclays
BCS
$71.2B
| $669K | ﹤0.01% |
85,175
+75,819
| +810% | +$596K |
|
481
Macerich
MAC
$4.68B
| $663K | ﹤0.01% |
+58,886
| New | +$663K |
|
482
Vuzix
VUZI
$178M
| $660K | ﹤0.01% |
129,575
+79,953
| +161% | +$407K |
|
483
Huntington Bancshares
HBAN
$25.9B
| $657K | ﹤0.01% |
+60,986
| New | +$657K |
|
484
Masimo
MASI
$8.08B
| $652K | ﹤0.01% |
3,965
+630
| +19% | +$104K |
|
485
Wynn Resorts
WYNN
$12.8B
| $646K | ﹤0.01% |
+6,117
| New | +$646K |
|
486
Invesco Senior Loan ETF
BKLN
$6.88B
| $644K | ﹤0.01% |
+30,617
| New | +$644K |
|
487
Amplify Energy
AMPY
$151M
| $642K | ﹤0.01% |
94,832
+35,870
| +61% | +$243K |
|
488
89bio
ETNB
$1.27B
| $641K | ﹤0.01% |
33,858
-123,842
| -79% | -$2.34M |
|
489
AdvisorShares Pure US Cannabis ETF
MSOS
$889M
| $641K | ﹤0.01% |
115,823
-226,190
| -66% | -$1.25M |
|
490
Garmin
GRMN
$46.1B
| $639K | ﹤0.01% |
6,133
-3,843
| -39% | -$400K |
|
491
Flowserve
FLS
$7.28B
| $632K | ﹤0.01% |
17,039
-6,725
| -28% | -$249K |
|
492
MBIA
MBI
$386M
| $621K | ﹤0.01% |
71,912
+55,182
| +330% | +$477K |
|
493
Calix
CALX
$3.99B
| $620K | ﹤0.01% |
+12,426
| New | +$620K |
|
494
Ashland
ASH
$2.49B
| $616K | ﹤0.01% |
7,090
+5,462
| +336% | +$475K |
|
495
Origin Materials
ORGN
$78.5M
| $614K | ﹤0.01% |
144,214
+37,012
| +35% | +$158K |
|
496
Post Holdings
POST
$5.77B
| $614K | ﹤0.01% |
7,094
+695
| +11% | +$60.2K |
|
|
FL
497
DELISTED
Foot Locker
FL
| $612K | ﹤0.01% |
+22,582
| New | +$612K |
|
498
Krystal Biotech
KRYS
$4.2B
| $609K | ﹤0.01% |
+5,189
| New | +$609K |
|
|
SAFE
499
Safehold
SAFE
$1.18B
| $608K | ﹤0.01% |
25,658
+1,399
| +6% | +$33.2K |
|
500
Jackson Financial
JXN
$6.68B
| $605K | ﹤0.01% |
19,790
+19,226
| +3,409% | +$588K |
|