What is a quant rating?

Quant rating, explained

"Quant" is short for quantitative. A quant model applies the same set of factors to every stock in its universe, scores each factor relative to peers, and combines the factor scores into an overall rating, such as Strong Buy to Strong Sell or a numeric grade.

Quant ratings and AI scores overlap. The difference is mostly in how the weights are set: classic quant ratings use fixed, often published factor rules, while machine-learning models learn weights from data and can be harder to explain.

Because factors are measured relative to peers, a stock can rate highly simply because its sector looks cheap or is trending. Read the factor breakdown, not only the headline grade, and remember that factor performance changes across market cycles.

Example

A stock with strong earnings revisions and momentum but an expensive valuation might receive an overall quant rating of Buy, with the valuation factor graded poorly and the others graded well.

Tools that use this

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  Seeking Alpha Premium

  Research subscription whose Quant Ratings grade about 5,600 stocks daily on value, growth, profitability, momentum and EPS revisions. Rules-based quant ratings, not machine-learning AI.

Related terms

• AI stock scoreAn AI stock score is a single number or grade that a model assigns to a stock to summarise how favourably it rates that stock's outlook over a stated time horizon.
• AI stock pickerAn AI stock picker is software that uses machine learning or other statistical models to rank, score or suggest individual stocks to buy, sell or watch.
• Stock screenerA stock screener is a tool that filters a market's stocks down to a shortlist matching criteria you set, such as price, market cap, valuation ratios, technical indicators or AI scores.
• BacktestingBacktesting is testing a trading or investing rule on historical market data to see how it would have performed had it been followed in the past.

Where this matters

Quant rating comes up most when choosing AI stock research tools. See Best AI stock research tools for the tools we compare, with dated prices.