Keyword price-impact finder: how stocks move after headline keywords
How the Quantisnow keyword price-impact finder measures the next-close stock move after headlines containing a keyword, what each statistic means, the free example keywords, and custom keywords on Plus.
Key takeaways
- The keyword price-impact finder at /tools/keyword-impact measures how stocks moved by the next close after every single-ticker Quantisnow headline containing a keyword over the last 12 months.
- It reports the average and median next-close move, the share of stocks that closed higher, the average absolute move, the average move versus SPY, a 5-session move and how often the keyword appears.
- Eight example keywords, including FDA approval, public offering, buyback and reverse stock split, are free for everyone at /tools/keyword-impact/<keyword>.
- Custom keywords require a Plus subscription.
The keyword price-impact finder at /tools/keyword-impact answers a simple question: when a headline says "offering", "FDA approval" or "buyback", how does the stock usually trade? Type a keyword and it measures the next-close move after every matching single-ticker headline on the Quantisnow wire in the last 12 months.
Free examples and custom keywords
| Keyword | Free page |
|---|---|
| FDA approval | /tools/keyword-impact/fda-approval |
| public offering | /tools/keyword-impact/public-offering |
| buyback | /tools/keyword-impact/buyback |
| reverse stock split | /tools/keyword-impact/reverse-stock-split |
| upgraded | /tools/keyword-impact/upgraded |
| downgraded | /tools/keyword-impact/downgraded |
| Phase 3 | /tools/keyword-impact/phase-3 |
| partnership | /tools/keyword-impact/partnership |
These eight pages show full results to everyone, signed in or not. Typing one of them into the search box takes you to its page.
Any other keyword is a Plus feature. Signed-out visitors and free accounts who search a custom keyword see a prompt to upgrade instead of results. See Free vs Plus.
How to use it
- Go to /tools/keyword-impact.
- Type a headline keyword or phrase (up to 60 characters), for example going concern or strategic alternatives.
- Click Measure.
- Read the summary sentence, the statistics, the frequency chart, the distribution and the recent headlines.
A keyword needs at least one word of three or more letters that is not a very common word such as "the", "of" or "for". Shorter keywords are rejected with a message asking for a longer one. If no headline matched in the last 12 months, the page says so; try a shorter or more common phrase. Very broad keywords can time out; a more specific phrase fixes that.
What it measures
| Statistic | Meaning |
|---|---|
| Average move | Mean next-close move, close of the reaction session against the prior session's close |
| Median move | Middle next-close move, less sensitive to a few extreme moves |
| Closed higher | Share of stock-sessions where the stock closed up |
| Avg absolute move | Mean size of the move, ignoring direction: a measure of volatility around the headline |
| Sample | Number of distinct stock-sessions, and the number of headlines behind them |
| Average vs SPY | Average move minus the SPY move in the same session |
| 5-session average | Close four sessions after the reaction session against the same base, with its median |
| Per day, per month, per year | How often headlines containing the keyword appear |
Below the statistics the page shows a monthly bar chart of matching headlines (the latest month is to date), a distribution of next-close moves in eight buckets from below -10% to above +10%, and the 25 most recent matching headlines with their ticker, next-close move and 5-session move.
Methodology
- Headlines: every press release, analyst rating and news item tagged to exactly one listed company on the Quantisnow wire in the last 12 months. SEC filing notices and items that mention several companies are left out, because the move cannot be pinned on one stock.
- Matching: the keyword must appear in the headline as a phrase, case-insensitive. Words under three letters and very common words only count inside a longer phrase.
- Reaction session: the first regular session whose close came after the headline. A headline before 4:00 pm ET on a trading day is measured on that day, so a pre-market headline gets its full gap and session. A headline after 4:00 pm ET is measured on the next session.
- Prices: daily split-adjusted consolidated (SIP) bars from Alpaca. Dividends are not included. Moves beyond plus or minus 300% are dropped as bad prints or missed splits.
- De-duplication: several matching headlines on the same stock before the same close (a proposed offering and its pricing, for example) count as one stock-session in the move statistics. Frequency counts every headline.
- Sample cap: very broad keywords use the newest 20,000 matching headlines.
- Refresh: new reactions are computed once a day after the close on weekdays, so the most recent session appears the same evening.
A move reflects everything that happened to the stock that session, not just the headline. The tool shows historical averages, not a prediction, and it is not a recommendation to buy or sell any security.
Related
- Trading news catalysts and catalyst
- Shelf offerings and dilution for what "public offering" headlines usually mean
- FDA approval process and Analyst upgrades and downgrades
- Stock movers for today's gainers and losers with their news
- Insights search to read past headlines by keyword
FAQ
What does the keyword price-impact finder measure?
It measures how stocks moved by the next close after every single-ticker Quantisnow headline containing a keyword over the last 12 months, including the average and median move, the share that closed higher, the move versus SPY and a 5-session move.
Is the keyword impact tool free?
The eight example keywords (FDA approval, public offering, buyback, reverse stock split, upgraded, downgraded, Phase 3 and partnership) are free for everyone. Custom keywords require Plus.
How is the next-close move calculated?
It is the close of the first regular session that closed after the headline, divided by the prior session's close, minus one. Headlines after 4:00 pm ET are measured on the next session.
Why are SEC filings and multi-ticker headlines excluded?
SEC filing notices are left out of this tool, and so are items tagged to more than one company, because a single price move cannot be attributed to one stock.
How often is the keyword impact data updated?
Once a day after the US market close on weekdays. The free example pages pick up each update within six hours.