RMD ResMed Inc.

together opposite · bar = ρ at each lag, −10 … 0 … +10 days · holdout ρ · click a card for the full picture

RMD vs IHI

Both indexed to 100 at 2026-05-11.

RMD IHI · range 92–128 · 2026-05-11 → 2026-11-06

These tend to repeat RMD's moves later.

STBF Performance Trust Short Term Bond ETF

lag 1dρ +0.20holdout +0.17stable 75%$/day $184krobust

Same day, ranked by what's left after the market and sector factors are removed ("beyond mkt").

IHI iShares U.S. Medical Devices ETF

ρ +0.66beyond mkt +0.46holdout +0.72stable 100%robust

IDXX IDEXX Laboratories, Inc. Common Stock

ρ +0.54beyond mkt +0.32holdout +0.58stable 100%robust

XHE State Street SPDR S&P Health Care Equipment ETF

ρ +0.56beyond mkt +0.31holdout +0.59stable 100%robust

SYK Stryker Corporation

ρ +0.52beyond mkt +0.30holdout +0.61stable 100%robust

HEAL Global X Funds Global X HealthTech ETF

ρ +0.49beyond mkt +0.29holdout +0.49stable 100%robust

INSP Inspire Medical Systems, Inc.

ρ +0.41beyond mkt +0.27holdout +0.39stable 88%robust

No day-to-day relationship, but 5- or 10-day returns move together.

GSHD Goosehead Insurance, Inc. Class A Common Stock

horizon 5dρ +0.31holdout +0.49stable 88%robust

Biggest shifts in same-day correlation over the last 63 trading days versus the year before.

LFUS Littelfuse, Inc. Common Stock

Δ -0.68recent -0.44prior +0.24beyond mkt +0.13

ARW Arrow Electronics, Inc.

Δ -0.65recent -0.40prior +0.24beyond mkt +0.09

EME EMCOR Group, Inc.

Δ -0.64recent -0.50prior +0.14beyond mkt +0.01

AROC Archrock Inc

Δ -0.64recent -0.49prior +0.14beyond mkt +0.02

MTZ MasTec, Inc.

Δ -0.63recent -0.52prior +0.11beyond mkt -0.04

FIX Comfort Systems USA, Inc.

Δ -0.63recent -0.50prior +0.13beyond mkt +0.06

Strong beyond-the-market co-movement with few shared neighbours.

Symbol	beyond mkt	raw ρ	shared	isolation
IHI iShares U.S. Medical Devices ETF	+0.46	+0.66	22