IDT IDT Corporation Class B

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

IDT vs SPOK

Both indexed to 100 at 2026-05-11.

IDT SPOK · range 99–162 · 2026-05-11 → 2026-11-06

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

SPOK Spok Holdings, Inc. Common Stock

ρ +0.39beyond mkt +0.20holdout +0.39stable 100%robust

MQ Marqeta, Inc. Class A Common Stock

ρ +0.40beyond mkt +0.18holdout +0.48stable 100%robust

GIC Global Industrial Company

ρ +0.37beyond mkt +0.17holdout +0.30stable 88%robust

OOMA Ooma, Inc. Common Stock

ρ +0.39beyond mkt +0.16holdout +0.37stable 100%robust

CRAI CRA International, Inc. Common Stock

ρ +0.35beyond mkt +0.14holdout +0.26stable 88%robust

EEFT Euronet Worldwide, Inc. Common Stock

ρ +0.41beyond mkt +0.14holdout +0.43stable 100%robust

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

DAVE Dave Inc. Class A Common Stock

horizon 10dρ +0.47holdout +0.40stable 88%robust

FELE Franklin Electric Co., Inc. Common Stock

horizon 5dρ +0.32holdout +0.11stable 75%moderate

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

GHM Graham Corporation

Δ -0.53recent -0.35prior +0.18beyond mkt -0.01

FELE Franklin Electric Co., Inc. Common Stock

Δ -0.51recent -0.19prior +0.32beyond mkt +0.06

ALNT Allient Inc. Common Stock

Δ -0.48recent -0.32prior +0.16beyond mkt +0.02

CRNT Ceragon Networks Ltd. Ordinary Shares

Δ -0.46recent -0.32prior +0.13beyond mkt -0.07

TGL Treasure Global Inc. Common Stock

Δ -0.45recent -0.33prior +0.13beyond mkt -0.00

AM Antero Midstream Corporation Common Stock

Δ -0.44recent -0.31prior +0.13beyond mkt +0.02