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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TIME
476
DELISTED
Time Inc.
TIME
| $452K | 0.02% |
+23,379
| New | +$452K |
|
477
Franklin Resources
BEN
$12.7B
| $451K | 0.02% |
+10,706
| New | +$451K |
|
|
CBM
478
DELISTED
Cambrex Corporation
CBM
| $451K | 0.02% |
8,198
+6,924
| +543% | +$381K |
|
479
CubeSmart
CUBE
$9.3B
| $449K | 0.02% |
17,325
+2,775
| +19% | +$71.9K |
|
|
FRGI
480
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $448K | 0.02% |
+18,534
| New | +$448K |
|
481
Royal Caribbean
RCL
$88.5B
| $445K | 0.02% |
+4,543
| New | +$445K |
|
482
Federal Agricultural Mortgage
AGM
$2.05B
| $444K | 0.02% |
7,720
+5,835
| +310% | +$336K |
|
483
American Tower
AMT
$90.4B
| $444K | 0.02% |
3,661
-641
| -15% | -$77.7K |
|
484
New Oriental
EDU
$8.59B
| $442K | 0.02% |
7,322
+4,342
| +146% | +$262K |
|
485
Newell Brands
NWL
$2.43B
| $441K | 0.02% |
+9,359
| New | +$441K |
|
486
PTC
PTC
$24.7B
| $439K | 0.02% |
+8,363
| New | +$439K |
|
|
ISLE
487
DELISTED
Isle of Capri Casinos Inc
ISLE
| $436K | 0.02% |
16,566
+15,172
| +1,088% | +$399K |
|
488
National Grid
NGG
$69.4B
| $435K | 0.02% |
+7,015
| New | +$435K |
|
489
Insperity
NSP
$1.94B
| $433K | 0.02% |
9,778
+9,662
| +8,329% | +$428K |
|
490
Assembly Biosciences
ASMB
$171M
| $431K | 0.02% |
1,409
+1,002
| +246% | +$307K |
|
491
Direxion Daily Energy Bull 2X Shares
ERX
$223M
| $430K | 0.02% |
1,357
+1,115
| +461% | +$353K |
|
492
ING
ING
$74.4B
| $427K | 0.02% |
28,338
+5,794
| +26% | +$87.3K |
|
|
AHGP
493
DELISTED
Alliance Holdings GP,L.P.
AHGP
| $427K | 0.02% |
15,595
-7,054
| -31% | -$193K |
|
|
SPNC
494
DELISTED
Spectranetics Corp
SPNC
| $425K | 0.02% |
14,617
+12,408
| +562% | +$361K |
|
495
AngloGold Ashanti
AU
$32.6B
| $422K | 0.02% |
39,191
+25,032
| +177% | +$270K |
|
496
KKR & Co
KKR
$133B
| $422K | 0.02% |
23,198
-15,501
| -40% | -$282K |
|
497
Navient
NAVI
$1.33B
| $421K | 0.02% |
+28,585
| New | +$421K |
|
498
Alkermes
ALKS
$4.71B
| $420K | 0.02% |
7,183
-10,184
| -59% | -$595K |
|
|
VLRS
499
Controladora Vuela Compañía de Aviación
VLRS
$769M
| $420K | 0.02% |
30,177
+30,135
| +71,750% | +$419K |
|
500
Essex Property Trust
ESS
$17.3B
| $411K | 0.02% |
+1,778
| New | +$411K |
|