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See what insiders are buying — free 7-day trial, no credit card required.
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Now in public beta — launched February 2026
Built for investors who do their
own homework.
DipBuster surfaces what institutional investors have always paid for — insider cluster signals, NCAV deep dives, and real financial data — at a price retail investors can actually afford.
150+
Stocks covered
LSE, NYSE & NASDAQ
4
Live data APIs
Real-time feeds
90+
Years of methodology
Graham to today
7 days
Free trial
No card required
31%
Net-net avg return
UK market 2009–19
68%
Cluster buy accuracy
Academic research
Our Mission
Level the playing field for retail investors
Institutional investors have always had access to real-time insider filings, quant screening tools, and alternative data. Individual investors got Google Finance.
We built DipBuster to change that. Every signal we show — insider cluster buys, NCAV screeners, social momentum — is the same signal a well-funded quant desk would analyse. We just made it human-readable and affordable.
We cover both the London Stock Exchange & AIM and NYSE & NASDAQ — with special depth in UK value opportunities that are systematically underserved by mainstream platforms.
Real Signal — GME · Jan 2026
① Insider cluster detected
Ryan Cohen bought $13.1M of GME stock
Director Alain Attal also bought within 48 hours. Two insiders, one window. That's the cluster signal.
NCAV Ratio
0.83×
Below 1.0 = undervalued
Social Velocity
+340%
Mentions in 48 hours
DipBuster Score™
Insider + NCAV + momentum
What it means: Two insiders bought the same week. The stock trades below its liquidation value. Online mentions tripled. Three independent signals, same direction.
Live Signal Example
Browse stocks with live signals →
Core Principles
What we believe about investing
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Evidence over opinion
We back every signal with peer-reviewed academic research. If the data doesn't support it, we don't show it.
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Transparency by default
Our methodology is fully published in the Learn section. No black boxes. No mysterious algorithms.
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Margin of safety always
Graham's most important principle. We never show a stock as attractive unless it trades at a meaningful discount to intrinsic value.
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UK-first coverage
US platforms overlook the LSE and AIM. We built from the ground up for UK investors, with ISA/SIPP context throughout.
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Not financial advice
We are an information tool, not an adviser. We will never tell you to buy or sell. That decision is always yours.
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Speed matters
Insider filings are public but slow to digest. We process new Form 4 and RNS filings within minutes and surface the signals that matter.
How It Works
From raw filing to actionable signal
SEC EDGAR & LSE RNS
Insider filings are published by the regulator within 2 business days. We monitor both feeds in near-real-time.
Signal processing
Our algorithm parses each filing: role of insider, transaction size, proximity to earnings, and whether other insiders traded simultaneously.
Cluster detection
If 2+ insiders buy within 48 hours, we flag it as a "cluster buy" — historically the most predictive signal type.
Score calculation
The insider signal combines with NCAV ratio, social momentum, earnings quality, and price momentum to produce the DipBuster Score.
You get the signal
The result appears on the stock page, leaderboard, and your alert feed — with full context so you can decide what to do.
The Team
Built by investors, for investors
15 years in UK equity markets. Former analyst. Built DipBuster after spending years frustrated by the data gap between institutional and retail investors.
SR
Sarah R.
Head of Research
CFA charterholder. Specialises in UK small-cap value and AIM market dynamics. Writes our weekly insider signal digest.
Full-stack engineer with a background in fintech data pipelines. Built the real-time insider detection system.
JK
Jamie K.
Community & Content
Value investing educator and writer. Manages our Learn section and community forum. Answers your questions personally.
⚠ Important Notice
DipBuster is a financial data research and information platform. We are not authorised or regulated by the Financial Conduct Authority (FCA) or any other financial regulatory body. Nothing on this platform constitutes financial advice. Always consult a qualified FCA-regulated financial adviser before making investment decisions. Capital is at risk.
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