John B. Sanfilippo & Son, Inc. (JBSS)
JBSS moved a median of -0.03% 30 minutes after news, and +0.27% by the close. How JBSS actually reacts to news — the realized, point-in-time move the market made, measured across 193 labeled events over the last three years with zero look-ahead.
JBSS’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 39% | 166 |
| 30-min | -0.03% | 49% | 189 |
| 60-min | -0.02% | 49% | 193 |
| to close | +0.27% | 55% | 192 |
| Middle 50% of JBSS reactions | -0.72% to +0.57% |
|---|---|
| Median reaction (30-min) | -0.03% |
| Measured reactions | 193 |
Half of all John B. Sanfilippo & Son, Inc. news events land between -0.72% and +0.57% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when JBSS moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to JBSS's baseline. Nothing else.
Recent JBSS events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K SANFILIPPO JOHN B & SON For: Oct 01 | SEC filing · Form 8-K | SEC EDGAR | +0.48% | -1.15% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2026 Fourth Quarter and Full Year Results | Press release | Business Wire | -3.32% | +0.34% | |
| John B. Sanfilippo & Son, Inc. 4th Quarter Fiscal Year 2026 Operating Results Conference Call | Press release | GlobeNewswire | +1.58% | +1.69% | |
| John B. Sanfilippo & Son, Inc. Announces CEO Transition and Leadership Changes | Press release | Business Wire | -0.42% | -6.09% | |
| John B. Sanfilippo & Son, Inc. Declares $1.05 Per Share Special Dividend and a Regular Annual Dividend of $0.95 Per Share | Press release | Business Wire | +0.95% | +1.28% | |
| John B. Sanfilippo & Son to Present and Host 1x1 Investor Meetings at the 16th Annual East Coast IDEAS Investor Conference on June 10th & 11th in New York, NY | Press release | Business Wire | +0.00% | +0.11% | |
| John B. Sanfilippo & Son, Inc. Voluntarily Recalls Snack Mix Products Due to Possible Health Risk | Press release | Business Wire | +0.00% | -0.86% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2026 Third Quarter Results | Press release | Business Wire | +0.50% | +5.40% | |
| John B. Sanfilippo & Son, Inc. 3rd Quarter Fiscal Year 2026 Operating Results Conference Call | Press release | GlobeNewswire | +0.00% | +0.42% | |
| John B. Sanfilippo & Son, Inc. Declares $1.50 Per Share Special Dividend | Press release | Business Wire | +0.00% | -1.53% | |
| Form 10-Q SANFILIPPO JOHN B & SON For: Dec 25 | SEC filing · Form 10-Q | SEC EDGAR | -1.22% | +5.99% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Jan 29 | SEC filing · Form 8-K | SEC EDGAR | -1.22% | +5.99% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2026 Second Quarter Results | Press release | Business Wire | -1.22% | +5.99% | |
| John B. Sanfilippo & Son, Inc. 2nd Quarter Fiscal Year 2026 Operating Results Conference Call | Press release | Business Wire | +0.00% | -0.87% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | -1.33% | -7.28% | |
| Form 10-Q SANFILIPPO JOHN B & SON For: Sep 25 | SEC filing · Form 10-Q | SEC EDGAR | +5.63% | +4.34% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | +5.63% | +4.34% | |
| John B. Sanfilippo & Son, Inc. Declares $1.00 Per Share Special Dividend | Press release | GlobeNewswire | +5.63% | +4.34% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2026 First Quarter Results | Press release | GlobeNewswire | +5.63% | +4.34% | |
| John B. Sanfilippo & Son, Inc. 1st Quarter Fiscal Year 2026 Operating Results Conference Call | Press release | Business Wire | +0.00% | -0.86% | |
| Form ARS SANFILIPPO JOHN B & SON For: Jun 26 | SEC filing · Form ARS | SEC EDGAR | -0.28% | +0.43% | |
| Form DEF 14A SANFILIPPO JOHN B & SON For: Sep 11 | SEC filing · Form DEF | SEC EDGAR | +0.00% | -0.73% | |
| Form DEFA14A SANFILIPPO JOHN B & SON | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | -0.73% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Aug 26 | SEC filing · Form 8-K | SEC EDGAR | +1.95% | +2.56% | |
| Form 10-K SANFILIPPO JOHN B & SON For: Jun 26 | SEC filing · Form 10-K | SEC EDGAR | +1.61% | +5.20% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Aug 20 | SEC filing · Form 8-K | SEC EDGAR | +1.61% | +5.20% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2025 Fourth Quarter and Full Year Results | Press release | Business Wire | +1.61% | +5.20% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | +0.47% | — | |
| John B. Sanfilippo & Son, Inc. 4th Quarter and Full-Year 2025 Operating Results Conference Call | Press release | GlobeNewswire | -0.51% | -0.92% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | +0.58% | -1.02% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Jul 15 | SEC filing · Form 8-K | SEC EDGAR | -0.43% | +1.19% | |
| John B. Sanfilippo & Son, Inc. Declares $0.60 Per Share Special Dividend and a Regular Annual Dividend of $0.90 Per Share | Press release | Business Wire | -0.43% | +1.19% | |
| John B. Sanfilippo & Son, Inc. to Present and Host 1x1 Investor Meetings at the 15th Annual East Coast IDEAS Investor Conference on June 12th in New York, NY | Press release | Business Wire | +0.00% | +0.88% | |
| Form 10-Q SANFILIPPO JOHN B & SON For: Mar 27 | SEC filing · Form 10-Q | SEC EDGAR | -5.53% | -4.01% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -5.53% | -4.01% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2025 Third Quarter Results | Press release | Business Wire | -5.53% | -4.01% | |
| John B. Sanfilippo & Son, Inc. 3rd Quarter Fiscal Year 2025 Operating Results Conference Call | Press release | GlobeNewswire | -0.62% | -0.80% | |
| Form 10-Q SANFILIPPO JOHN B & SON For: Dec 26 | SEC filing · Form 10-Q | SEC EDGAR | +5.29% | -5.86% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Jan 29 | SEC filing · Form 8-K | SEC EDGAR | +5.29% | -5.86% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2025 Second Quarter Results | Press release | Business Wire | +5.29% | -5.86% | |
| John B. Sanfilippo & Son, Inc. 2nd Quarter Fiscal Year 2025 Operating Results Conference Call | Press release | GlobeNewswire | -0.90% | +1.32% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Oct 30 | SEC filing · Form 8-K | SEC EDGAR | -0.11% | +3.75% | |
| Form 10-Q SANFILIPPO JOHN B & SON For: Sep 26 | SEC filing · Form 10-Q | SEC EDGAR | +0.07% | -9.76% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Oct 30 | SEC filing · Form 8-K | SEC EDGAR | +0.07% | -9.76% | |
| John B. Sanfilippo & Son, Inc. Reports Fiscal 2025 First Quarter Results | Press release | Business Wire | +0.07% | -9.76% | |
| John B. Sanfilippo & Son, Inc. 1st Quarter Fiscal Year 2025 Operating Results Conference Call | Press release | GlobeNewswire | +0.00% | +0.65% | |
| Form ARS SANFILIPPO JOHN B & SON For: Jun 27 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +0.30% | |
| Form DEF 14A SANFILIPPO JOHN B & SON For: Sep 12 | SEC filing · Form DEF | SEC EDGAR | -0.20% | +0.31% | |
| Form DEFA14A SANFILIPPO JOHN B & SON | SEC filing · Form DEFA14A | SEC EDGAR | -0.20% | +0.31% | |
| Form 8-K SANFILIPPO JOHN B & SON For: Aug 29 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.77% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the JBSS section they belong to.
Where else JBSS is measured.
JBSS earnings → · Analyst actions → · SEC filings →
Other Consumer Defensive names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Hailiang Education Group Inc. - American Depositary Shares (HLG) | 195 | +0.10% | 52% |
| BRF S.A. (BRFS) | 194 | -0.03% | 47% |
| HF Foods Group Inc. (HFFG) | 190 | 0.00% | 46% |
| Limoneira Co (LMNR) | 190 | -0.03% | 43% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Consumer Defensive names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is John B. Sanfilippo & Son, Inc.'s median reaction calculated?
Every labeled JBSS news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 193 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 49% of JBSS's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does JBSS's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.