Skip to main content

Stocks

Browse Stocks Search any US-listed stock
Stock Screener Combine ownership, insider and short filters
Valuation Multiples EV/Revenue, EV/EBIT and P/E vs industry
Most Shorted Highest short interest
Squeeze Risk Composite short-squeeze score
Insider Sentiment Stocks insiders are accumulating most
Largest Short Volume Daily short-volume leaders
Highest Off-Exchange Share Dark-pool / OTC volume leaders
Largest Buybacks Biggest share-repurchase programs
Going-Concern Flags Companies disclosing going-concern doubt

Institutions

Filers & Rankings

Browse Filers All 13F institutional filers
Top by AUM Largest filers by assets
Smart Money Index Top funds' highest-conviction basket
Superinvestors Famous value investors' portfolios
AUM Movers Biggest assets-under-management swings
Most-Held Stocks Stocks owned by the most filers
Last Quarter's Movers Notable position changes
Overlap Matrix Compare filer portfolios side by side
Clone Backtest Backtest a combined clone of several filers
Beneficial Ownership Recent 13D / 13G >5% stakes

13F Activity

13F Statistics Aggregate filing statistics
Latest Filings Newest 13F submissions
13F Trends Sector and flow trends
Double-Down Report Increased-conviction buys
Conviction Heat Map Crowded positions at a glance

Markets

Insider Trading Corporate insider buys and sells
Funds & ETFs Registered funds and ETFs from Form NPORT-P
Investment Advisers SEC-registered Form ADV firms
Economic Data Federal Reserve and macro indicators
Economic Calendar Upcoming macro data releases
FDA Calendar Upcoming FDA advisory-committee meetings
Congress Net Worth Richest members by disclosed net worth
Congress Leaderboard Members ranked by portfolio performance

⌘K

Log In Register

Menu

Stocks

Browse Stocks
Stock Screener
Valuation Multiples
Most Shorted
Squeeze Risk
Insider Sentiment
Largest Short Volume
Highest Off-Exchange Share
Largest Buybacks
Going-Concern Flags

Institutions

Filers & Rankings
Browse Filers
Top by AUM
Smart Money Index
Superinvestors
AUM Movers
Most-Held Stocks
Last Quarter's Movers
Overlap Matrix
Clone Backtest
Beneficial Ownership
13F Activity
13F Statistics
Latest Filings
13F Trends
Double-Down Report
Conviction Heat Map

Markets

Insider Trading
Funds & ETFs
Investment Advisers
Economic Data
Economic Calendar
FDA Calendar
Congress Net Worth
Congress Leaderboard

Log In Register

Stocks
SPOK
8-K

8-K

Spok Holdings, Inc (SPOK)

8-K 2020-11-04 For: 2020-11-04

Added on April 11, 2026

© 2026 Equibles

Stocks Docs Terms Privacy Contact

Please leave this field empty

Report a Problem

Category

Description

Email (optional, for follow-up)