Simon Property Group, Inc. (SPG)
SPG moved a median of -0.01% 30 minutes after news, and +0.03% by the close. How SPG actually reacts to news — the realized, point-in-time move the market made, measured across 432 labeled events over the last three years with zero look-ahead.
SPG’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.01% | 49% | 424 |
| 30-min | -0.01% | 49% | 432 |
| 60-min | +0.01% | 52% | 432 |
| to close | +0.03% | 53% | 432 |
| Middle 50% of SPG reactions | -0.16% to +0.21% |
|---|---|
| Median reaction (30-min) | -0.01% |
| Measured reactions | 432 |
Half of all Simon Property Group, Inc. news events land between -0.16% and +0.21% at 30 minutes.
Reaction stats as of 2026-08-31. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How SPG reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 26 | -0.05% | 46% | +0.28% |
| Analyst downgrades | 25 | +0.39% | 76% | +0.74% |
| Rating reiterations | 90 | -0.02% | 49% | +0.01% |
| Price-target raises | 40 | -0.07% | 43% | -0.08% |
Last 3 years, pulled 2026-08-31. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how SPG ranks against every other measured name →
That’s how SPG usually reacts — get an email when it moves on news →Email me when SPG moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SPG's baseline. Nothing else.
Recent SPG events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Simon® Launches Simon Media Network™, Turning Real-World Consumer Behavior Into Measurable Business Impact | Press release | PR Newswire | -0.08% | -0.51% | |
| Simon® Announces Date For Its Second Quarter 2026 Earnings Release And Conference Call | Press release | PR Newswire | -0.07% | +0.92% | |
| Form 11-K SIMON PROPERTY GROUP For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.01% | -1.36% | |
| Simon Property Group Announces Offering of Euro-Denominated Notes | Press release | PR Newswire | -0.65% | +0.13% | |
| Simon Premium Outlets® Announces Retail's Biggest Experiential Shopping Event, National Outlet Shopping Day®, at 90 Destinations | Press release | PR Newswire | -0.16% | -1.80% | |
| Simon® is Teaming up with adidas® to Offer Fan Experiences for a Summer of Global Soccer | Press release | PR Newswire | +0.04% | -0.28% | |
| Form 8-K SIMON PROPERTY GROUP For: May 13 | SEC filing · Form 8-K | SEC EDGAR | +0.15% | -0.02% | |
| Form 8-K/A SIMON PROPERTY GROUP For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | +0.20% | -0.03% | |
| Form 8-K/A SIMON PROPERTY GROUP For: Mar 22 | SEC filing · Form 8-K | SEC EDGAR | -0.06% | -0.17% | |
| Form 8-K SIMON PROPERTY GROUP For: May 11 | SEC filing · Form 8-K | SEC EDGAR | -0.11% | +0.21% | |
| Simon® Reports First Quarter 2026 Results, Increases Full Year 2026 Real Estate FFO Per Share Guidance and Raises Quarterly Dividend | Press release | PR Newswire | -0.11% | +0.21% | |
| Form DEFA14A SIMON PROPERTY GROUP | SEC filing · Form DEFA14A | SEC EDGAR | -0.04% | +0.44% | |
| Simon® Announces Date For Its First Quarter 2026 Earnings Release And Conference Call | Press release | PR Newswire | -0.53% | -0.41% | |
| Form ARS SIMON PROPERTY GROUP For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.01% | +0.33% | |
| Form DEF 14A SIMON PROPERTY GROUP For: May 13 | SEC filing · Form DEF | SEC EDGAR | -0.06% | +0.23% | |
| Form DEFA14A SIMON PROPERTY GROUP | SEC filing · Form DEFA14A | SEC EDGAR | +0.03% | +0.23% | |
| SBX Group and SEE Bring the Sistine Chapel to Las Vegas | Press release | GlobeNewswire | -0.03% | -0.05% | |
| Form 8-K SIMON PROPERTY GROUP For: Mar 22 | SEC filing · Form 8-K | SEC EDGAR | +0.28% | +1.32% | |
| Simon Property Group Announces the Passing of David Simon | Press release | PR Newswire | -0.43% | -2.40% | |
| Simon® Announces $5.0 Billion Revolving Credit Facility and Amendment to $3.5 Billion Revolving Credit Facility | Press release | PR Newswire | -0.84% | -2.13% | |
| Simon® to Present at Citi's 2026 Global Property CEO Conference | Press release | PR Newswire | +0.07% | +0.30% | |
| Simon Property Group Announces David Simon's Resignation from Klépierre Supervisory Board | Press release | PR Newswire | -0.08% | +0.81% | |
| Copley Place™, Boston's Premier Luxury Shopping and Dining Destination, Announces Landmark Redevelopment | Press release | PR Newswire | +0.26% | -0.62% | |
| Form 8-K SIMON PROPERTY GROUP For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | +0.51% | -0.20% | |
| Simon Property Group Announces Appointment of Martin J. Cicco to Board of Directors | Press release | PR Newswire | +0.51% | -0.20% | |
| Simon® Announces New $2.0 Billion Common Stock Repurchase Program | Press release | PR Newswire | +0.51% | -0.20% | |
| Transforming the Future of Luxury Retail: Simon® Announces Major Redevelopments in Nashville, Denver & Tampa | Press release | PR Newswire | +0.04% | +2.74% | |
| Form 8-K SIMON PROPERTY GROUP For: Feb 02 | SEC filing · Form 8-K | SEC EDGAR | -0.01% | -0.59% | |
| Simon® Reports Fourth Quarter and Full Year 2025 Results | Press release | PR Newswire | -0.01% | -0.59% | |
| Simon Property Group Announces Reporting Information For 2025 Distributions | Press release | PR Newswire | -0.92% | -0.83% | |
| Simon® Announces Date For Its Fourth Quarter 2025 Earnings Release And Conference Call | Press release | PR Newswire | +0.49% | -0.02% | |
| Simon Property Group Sells $800 Million of Senior Notes | Press release | PR Newswire | +0.19% | -1.45% | |
| Autolane Secures $7.4M in Funding, Launches Curbside Operating System at Simon® Centers to Transform Retail Curbs for Autonomous Vehicle Era | Press release | Business Wire | +0.32% | -0.11% | |
| Electrify America and Simon® Collaboration Surpasses 500 Hyper-Fast Chargers | Press release | PR Newswire | -0.00% | -0.54% | |
| Holidays Start @TheMall™ | Press release | PR Newswire | +0.02% | -0.17% | |
| Simon® Acquires Phillips Place in Charlotte | Press release | PR Newswire | -0.13% | +0.98% | |
| LEAP, SIMON & SHOPIFY COLLABORATE TO ACCELERATE BOMBAS EXPANSION INTO PHYSICAL RETAIL WITH NEW TEXAS STORE | Press release | PR Newswire | -0.09% | -1.44% | |
| Simon® Debuts Simon+™: A New Loyalty Program Connecting Retailers and Shoppers | Press release | PR Newswire | +0.34% | -0.29% | |
| Simon® to Bring Sagefield™, A Curated Blend of Bespoke Retail, Culinary Artistry, and Design Excellence, to South Nashville | Press release | PR Newswire | +2.54% | +1.45% | |
| Form 8-K SIMON PROPERTY GROUP For: Nov 03 | SEC filing · Form 8-K | SEC EDGAR | +2.54% | +1.45% | |
| Simon® Acquires Remaining Interest in Taubman Realty Group | Press release | PR Newswire | -0.02% | +1.27% | |
| Simon® Reports Third Quarter 2025 Results | Press release | PR Newswire | +2.54% | +1.45% | |
| Simon® Promotes Stanley Shashoua to President of International Real Estate | Press release | PR Newswire | -0.21% | -1.02% | |
| Simon® Announces Date For Its Third Quarter 2025 Earnings Release And Conference Call | Press release | PR Newswire | +0.27% | +0.02% | |
| IEM Launches New Experiential Retail Innovation Platform at Simon with High-Growth Brands | Press release | PR Newswire | -0.13% | +0.00% | |
| Simon® to Present at the BofA Securities 2025 Global Real Estate Conference | Press release | PR Newswire | +0.46% | -0.30% | |
| Simon, Humana Step Forward to Build Healthier Communities | Press release | PR Newswire | -0.14% | +0.43% | |
| Simon Property Group Sells $1.5 Billion of Senior Notes | Press release | PR Newswire | +0.17% | +1.95% | |
| Form 8-K SIMON PROPERTY GROUP For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -0.03% | -1.45% | |
| Simon® Announces Key Executive Appointments | Press release | PR Newswire | -0.03% | -1.45% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SPG section they belong to.
Where else SPG is measured.
SPG earnings → · Analyst actions → · SEC filings →
Other Real Estate names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Cushman & Wakefield Ltd. Common Shares (CWK) | 436 | +0.11% | 55% |
| Crown Castle Inc. (CCI) | 432 | +0.11% | 53% |
| Kilroy Realty Corporation (KRC) | 429 | -0.12% | 42% |
| OWENS REALTY MTG INC (ORM) | 418 | +0.03% | 50% |
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 Real Estate names, measured the same way →
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How the numbers are made.
How is Simon Property Group, Inc.'s median reaction calculated?
Every labeled SPG 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 432 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 SPG'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 2026-08-31.
Does SPG'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.