All replaysPrism · Mistake Replay · № 01

Decision point · Sep 2018

Burry & cannabis — momentum vs fundamentals

Cannabis stocks ran 5× then collapsed 90%. The momentum-trap pattern was the one signal turning red.

InvestorMichael BurryTickerTLRYCataloguedPattern reconstruction
01 · The thesis

Cannabis legalisation in Canada (Oct 2018) drove a thematic frenzy across pure-play producers. Tilray's September 19 2018 spike to $300 (from a ~$22 IPO three months earlier) was emblematic — story-driven momentum unhinged from cash flows.

Cannabis stocks ran 5× then collapsed 90%. The momentum-trap pattern was the one signal turning red.
Michael Burry, Sep 2018
02 · The unwind

Tilray fell from $300 in September 2018 to under $5 by 2023. Most pure-play cannabis names lost more than 90%. Pricing wars, oversupply, regulatory delays in the US, and persistent operating losses ground the sector down for five years.

03 · What Prism would have said

At the September 2018 peak, a Prism memo would have flagged momentum_trap (price 95% through 52w range, no fundamental catalyst left) and dilution_risk (recent share issuance + cash burn). Multiple value frameworks would have rejected outright on the basic earnings/book screens. The disagreement classifier would have read momentum_vs_fundamentals with the bear camp dominant.

Patterns the engine would have flagged

  • momentum_trap
  • dilution_risk

Negative signals at the time

  • Quality (operating losses)
  • Valuation (price/sales > 100×)
  • Event (no positive catalyst left to surprise)
When every value framework rejects in unison, the multi-framework engine is screaming "no" — listen.
04 · Frameworks that would have rejected the trade

The same multi-framework engine running on every memo today would have surfaced this as a majority-bearish disagreement at the decision point, not in retrospect.

  1. Benjamin Graham

    Graham (Defensive)

    Negative earnings — disqualifies on the most basic Graham filter.

  2. Joel Greenblatt

    Magic Formula

    Negative ROC and earnings yield — disqualifies.

  3. Walter Schloss

    Net-net

    Trades at 100×+ tangible book — opposite of what Schloss would touch.

05 · The lesson

The momentum-trap pattern exists for setups exactly like this: price moving on theme, no fundamentals supporting the move, a fragile catalyst calendar. When every value framework rejects in unison, the multi-framework engine is screaming "no" — listen.

Primary sources

  1. WSJ — Tilray 2018 spike
  2. New Cannabis Ventures — sector returns

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For research and educational purposes only. Not financial advice. Past performance does not guarantee future results. Conduct independent due diligence before making any investment decision.