SP Plus Corporation (SP)
SP moved a median of 0.00% 30 minutes after news, and +0.02% by the close. How SP actually reacts to news — the realized, point-in-time move the market made, measured across 92 labeled events over the last three years with zero look-ahead.
SP’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.02% | 58% | 69 |
| 30-min | 0.00% | 54% | 69 |
| 60-min | +0.02% | 61% | 69 |
| to close | +0.02% | 56% | 70 |
| Middle 50% of SP reactions | -0.08% to +0.18% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 92 |
Half of all SP Plus Corporation news events land between -0.08% and +0.18% 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 SP moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SP's baseline. Nothing else.
Recent SP events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G SP Plus Corp | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form EFFECT SP Plus Corp | SEC filing · Form EFFECT | SEC EDGAR | — | — | |
| Form POS AM SP Plus Corp | SEC filing · Form POS | SEC EDGAR | — | — | |
| Form S-8 POS SP Plus Corp | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 8-K SP Plus Corp For: May 16 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K SP Plus Corp For: May 10 | SEC filing · Form 8-K | SEC EDGAR | +0.02% | +0.02% | |
| Form 10-Q SP Plus Corp For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +0.02% | |
| Form 8-K SP Plus Corp For: May 01 | SEC filing · Form 8-K | SEC EDGAR | -0.87% | -0.77% | |
| SP Plus Corporation Announces First Quarter 2024 Results | Press release | GlobeNewswire | -0.87% | -0.77% | |
| SP Plus Corporation to Manage New On-Street Parking System for the City of Jackson, Mississippi | Press release | GlobeNewswire | -0.23% | +0.77% | |
| SP Plus Corporation Launches its Bags® Branded Technology at the New Brightline Orlando Station | Press release | GlobeNewswire | -0.10% | -0.29% | |
| SP Plus Corporation Now Managing Parking and Shuttle Operations at Des Moines International Airport | Press release | GlobeNewswire | +0.08% | +0.25% | |
| SP Plus Corporation Offers Complimentary Bags® Remote Check-in and Bag Drop Services at Harry Reid International Airport | Press release | GlobeNewswire | +0.04% | +0.02% | |
| Form 10-K SP Plus Corp For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +0.12% | |
| Form 8-K SP Plus Corp For: Feb 27 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.12% | |
| SP Plus Corporation Announces Fourth Quarter and Full-Year 2023 Results | Press release | GlobeNewswire | +0.00% | +0.12% | |
| Form 8-K SP Plus Corp For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | +0.29% | +0.16% | |
| SP Plus Stockholders Approve Merger With Metropolis Technologies | Press release | GlobeNewswire | +0.29% | +0.16% | |
| Form 8-K SP Plus Corp For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | +0.02% | +0.23% | |
| Form DEFA14A SP Plus Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.02% | +0.23% | |
| SP Plus Corporation Implements Technology-Based Parking Management Innovations at Miami Valley Hospital | Press release | GlobeNewswire | -0.37% | +0.25% | |
| Forbes Names SP Plus Corporation to its 2024 List of America’s Most Successful Small-Cap Companies | Press release | GlobeNewswire | +0.12% | +0.10% | |
| Form DEFA14A SP Plus Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.12% | +0.10% | |
| SP Plus Corporation Named to Newsweek’s America’s Greatest Workplaces for Diversity 2024 | Press release | GlobeNewswire | -0.27% | -0.39% | |
| Form DEFM14A SP Plus Corp | SEC filing · Form DEFM14A | SEC EDGAR | +0.18% | +0.35% | |
| Form 8-K SP Plus Corp For: Dec 15 | SEC filing · Form 8-K | SEC EDGAR | +0.85% | +0.32% | |
| Form DEFA14A SP Plus Corp | SEC filing · Form DEFA14A | SEC EDGAR | +0.85% | +0.32% | |
| Form PREM14A SP Plus Corp For: Dec 18 | SEC filing · Form PREM14A | SEC EDGAR | +0.27% | +0.47% | |
| SP Plus Corporation Upgrades Parking Services on the University of Akron Campus | Press release | GlobeNewswire | +1.25% | +0.02% | |
| SP Plus Corporation Awarded Five-Year Contract at San Francisco International Airport | Press release | GlobeNewswire | -0.20% | -0.10% | |
| ALERT: Juan Monteverde Encourages the Shareholders of SP, PATI, SRT to Take Action | Press release | Accesswire | +0.06% | +0.04% | |
| Form 10-Q SP Plus Corp For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.28% | +1.24% | |
| Form 8-K SP Plus Corp For: Nov 01 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.00% | |
| SP Plus Corporation Announces Third Quarter 2023 Results | Press release | GlobeNewswire | +0.00% | +0.00% | |
| Form 8-K SP Plus Corp For: Oct 26 | SEC filing · Form 8-K | SEC EDGAR | +0.50% | -0.08% | |
| SP Plus Corporation to Release Third Quarter 2023 Results on November 1, 2023 | Press release | GlobeNewswire | +0.50% | -0.08% | |
| SHAREHOLDER INVESTIGATION: Halper Sadeh LLC Investigates SP, MRTX, ICPT | Press release | GlobeNewswire | -0.08% | -0.70% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SP section they belong to.
Where else SP is measured.
SP earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| SERCO GROUP PLC ORD (SECCF) | 92 | 0.00% | 29% |
| SIFCO Industries, Inc. (SIF) | 92 | -0.30% | 47% |
| ASHTED GRP PLC UNSP/ADR (ASHTY) | 91 | -0.01% | 41% |
| TIBERIUS ACQUISITION CORP UNITS (TIBRU) | 91 | 0.00% | 39% |
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 Industrials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is SP Plus Corporation's median reaction calculated?
Every labeled SP 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 92 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. 54% of SP'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 SP'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.