Alt-Data#198tier 3live in productionNew

`product review velocity`

cadence: Weeklydata: highlong only

paper

2018

Source

Huang, J. (2018). "The customer knows best: The investment value of consumer opinions." Journal of Marketing Research.

Read the paper →

What it checks

Amazon review count for a brand accelerates → the parent stock outperforms 1-2 months.

Mechanism

Amazon review-count 7d acceleration z > +1 → consumer-discretionary outperformance via revenue-surprise channel.

No production champion data for this family yet. Stats appear once the discovery pipeline promotes at least one strategy with this family tag.

Signal rule

review acceleration z > +1 → long; universe: KO/WMT/TGT/COST/AAPL/NKE/LULU; hold 30/60d

Data dependencies

daily_prices
Adjusted-close OHLCV for every US-listed ticker; primary price feed.
amazon_reviews
Worker data table — see services/worker schema.

Expected edge

Paper alpha: 30-100 bps
Paper window: T+0 to T+60d

30-100 bps over 30-60d.

Example tickers where this is likely to fire

AAPL NKE LULU KO WMT TGT COST

Illustrative only — the signal fires based on the live data, not a fixed list.

Related families

wsb attention alphaBehavioral

ApeWisdom aggregates daily mentions from r/WallStreetBets and adjacent retail subreddits. Two distinct sub-edges: (a) mention spike + uptrend → 2-5 day continuation (squeeze-setup tail, Cookson-Engelberg-Mullins 2023 RFS); (b) mention spike with no uptrend → 5-20 day mean-reversion (attention-tax tail, Da-Engelberg-Gao 2011 JF social-media extension). We use own-name 60d trend to route between the two regimes.

store traffic safegraphAlt-Data

Weekly visits YoY +/-5% predicts SSS surprise for brick-mortar retail.

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product review velocity