ROCK Gibraltar Industries, Inc. Common Stock

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

ROCK vs NX

Both indexed to 100 at 2026-05-11.

ROCK NX · range 77–140 · 2026-05-11 → 2026-11-06

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

NX Quanex Building Products Corporation

ρ +0.68beyond mkt +0.26holdout +0.75stable 100%robust

SSD Simpson Manufacturing Co., Inc.

ρ +0.66beyond mkt +0.20holdout +0.70stable 100%robust

CASK Sempreon, Inc. Common Stock

ρ +0.41beyond mkt +0.19holdout +0.37stable 100%robust

APOG Apogee Enterprises, Inc. Common Stock

ρ +0.62beyond mkt +0.19holdout +0.62stable 100%robust

ALLE Allegion Public Limited Company

ρ +0.58beyond mkt +0.18holdout +0.61stable 100%robust

PKB Invesco Building & Construction ETF

ρ +0.64beyond mkt +0.18holdout +0.67stable 100%robust

VXX iPath Series B S&P 500 VIX Short-Term Futures ETN

ρ -0.44beyond mkt -0.05holdout -0.48stable 100%robust

BTAL AGF U.S. Market Neutral Anti-Beta Fund

ρ -0.41beyond mkt -0.02holdout -0.47stable 100%robust

VIXM ProShares VIX Mid-Term Futures ETF

ρ -0.38beyond mkt -0.01holdout -0.40stable 100%robust

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

HIO Western Asset High Income Opportunity Fund, Inc.

horizon 5dρ +0.31holdout +0.32stable 75%robust

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

BTA Beacon Tactical Alternatives Risk ETF

Δ -0.60recent -0.42prior +0.19beyond mkt -0.05

ORKT Orangekloud Technology Inc. Class A Ordinary Shares

Δ -0.56recent -0.40prior +0.16beyond mkt -0.05

MEOH Methanex Corporation Common Stock

Δ -0.55recent -0.47prior +0.08beyond mkt -0.13

DAR DARLING INGREDIENTS INC.

Δ -0.52recent -0.33prior +0.19beyond mkt -0.02

MATX Matsons, Inc.

Δ -0.51recent -0.10prior +0.41beyond mkt -0.07

ANDE Andersons, Inc. (The) Common Stock

Δ -0.50recent -0.20prior +0.30beyond mkt +0.03

Abnormal volume rises and falls on the same days as ROCK's, while prices do not move together: the same hands, not the same business.

Symbol	traded together ρ	big prints together ρ	priced together ρ	q
ZD Ziff Davis, Inc. Common Stock	+0.31	+0.25	-0.01	2e-9
UFPI UFP Industries, Inc. Common Stock	+0.33	+0.23	+0.18	8e-11
TKO TKO Group Holdings, Inc.	+0.30	+0.17	-0.03	5e-9