U.S. Silica Holdings, Inc. (SLCA)
SLCA moved a median of -0.03% 30 minutes after news, and -0.21% by the close. How SLCA actually reacts to news — the realized, point-in-time move the market made, measured across 120 labeled events over the last three years with zero look-ahead.
SLCA’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 49% | 96 |
| 30-min | -0.03% | 46% | 96 |
| 60-min | -0.03% | 37% | 96 |
| to close | -0.21% | 29% | 96 |
| Middle 50% of SLCA reactions | -0.60% to +0.52% |
|---|---|
| Median reaction (30-min) | -0.03% |
| Measured reactions | 120 |
Half of all U.S. Silica Holdings, Inc. news events land between -0.60% and +0.52% 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 SLCA moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to SLCA's baseline. Nothing else.
Recent SLCA events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K U.S. SILICA HOLDINGS, For: Aug 01 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-8 POS U.S. SILICA HOLDINGS, | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 10-Q U.S. SILICA HOLDINGS, For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | — | |
| Form 8-K U.S. SILICA HOLDINGS, For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| U.S. Silica Completes Transaction with Apollo Funds | Press release | PR Newswire | +0.07% | -0.03% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Jul 16 | SEC filing · Form 8-K | SEC EDGAR | -0.07% | -0.13% | |
| U.S. Silica Announces Stockholder Approval of Acquisition by Apollo Funds | Press release | PR Newswire | -0.07% | -0.13% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Jul 15 | SEC filing · Form 8-K | SEC EDGAR | +0.07% | -0.13% | |
| Form DEFA14A U.S. SILICA HOLDINGS, | SEC filing · Form DEFA14A | SEC EDGAR | +0.07% | -0.13% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Jul 08 | SEC filing · Form 8-K | SEC EDGAR | -0.03% | -0.10% | |
| Form DEFA14A U.S. SILICA HOLDINGS, | SEC filing · Form DEFA14A | SEC EDGAR | +0.10% | -0.03% | |
| Form DEFA14A U.S. SILICA HOLDINGS, | SEC filing · Form DEFA14A | SEC EDGAR | -0.16% | -0.39% | |
| Form DEFM14A U.S. SILICA HOLDINGS, | SEC filing · Form DEFM14A | SEC EDGAR | -0.26% | -0.13% | |
| Form PREM14A U.S. SILICA HOLDINGS, For: May 24 | SEC filing · Form PREM14A | SEC EDGAR | +0.03% | +0.39% | |
| U.S. Silica Announces Price Increases on Industrial and Specialty Products | Press release | PR Newswire | -0.06% | -0.26% | |
| Form 8-K U.S. SILICA HOLDINGS, For: May 09 | SEC filing · Form 8-K | SEC EDGAR | -0.16% | -0.39% | |
| SHAREHOLDER NOTICE: Halper Sadeh LLC Investigates SLCA, HRT | Press release | Accesswire | -0.89% | -1.21% | |
| SHAREHOLDER INVESTIGATION NOTICE: Halper Sadeh LLC Investigates SLCA, HCP, MTTR, HIBB | Press release | GlobeNewswire | -0.89% | -1.21% | |
| Form 10-Q U.S. SILICA HOLDINGS, For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.89% | -1.21% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Apr 26 | SEC filing · Form 8-K | SEC EDGAR | +0.64% | +2.19% | |
| Form DEFA14A U.S. SILICA HOLDINGS, | SEC filing · Form DEFA14A | SEC EDGAR | +0.64% | +2.19% | |
| SHAREHOLDER INVESTIGATION: Halper Sadeh LLC Investigates SLCA, HCP, IP, FUSN | Press release | Accesswire | +0.03% | +1.53% | |
| SLCA Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of U.S. Silica Holdings, Inc. Is Fair to Shareholders | Press release | Business Wire | +0.64% | +2.19% | |
| U.S. Silica Enters Into Definitive Agreement to Be Acquired by Apollo Funds for $1.85 Billion | Press release | PR Newswire | +0.64% | +2.19% | |
| U.S. Silica Holdings, Inc. Reports First Quarter 2024 Results | Press release | PR Newswire | +0.64% | +2.19% | |
| U.S. Silica Announces Timing of Earnings Release and Investor Call | Press release | PR Newswire | +0.77% | +0.77% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Mar 25 | SEC filing · Form 8-K | SEC EDGAR | +0.77% | -0.16% | |
| Form DEF 14A U.S. SILICA HOLDINGS, For: May 09 | SEC filing · Form DEF | SEC EDGAR | +0.77% | -0.16% | |
| Form DEFA14A U.S. SILICA HOLDINGS, | SEC filing · Form DEFA14A | SEC EDGAR | +0.77% | -0.16% | |
| U.S. Silica Announces Successful Completion of Term Loan B Repricing and $25 Million Loan Repurchase | Press release | PR Newswire | +0.77% | -0.16% | |
| U.S. Silica Announces Credit Rating Upgrades by Moody's Ratings and S&P Global | Press release | PR Newswire | +1.19% | +3.54% | |
| Form 10-K U.S. SILICA HOLDINGS, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.17% | -2.47% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Feb 27 | SEC filing · Form 8-K | SEC EDGAR | -1.82% | +7.27% | |
| U.S. Silica Holdings, Inc. Announces Fourth Quarter and Full Year 2023 Results | Press release | PR Newswire | -1.82% | +7.27% | |
| U.S. Silica Announces Timing of Earnings Release and Investor Call | Press release | PR Newswire | +0.57% | -1.72% | |
| U.S. Silica Holdings, Inc. Announces Completion of $25 Million Loan Repurchase | Press release | PR Newswire | +0.53% | -0.88% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Dec 15 | SEC filing · Form 8-K | SEC EDGAR | +0.61% | -2.36% | |
| U.S. Silica Appoints Chief Accounting Officer | Press release | PR Newswire | +0.61% | -2.36% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Dec 13 | SEC filing · Form 8-K | SEC EDGAR | -0.27% | +3.38% | |
| U.S. Silica Holdings, Inc. to Host Virtual Investor Event December 13 | Press release | PR Newswire | -1.09% | +0.27% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Nov 17 | SEC filing · Form 8-K | SEC EDGAR | -0.36% | -1.17% | |
| Global Energy Storage System Market Expected To Reach A Revenue Of $80 Billion in 2035 | Press release | PR Newswire | -2.18% | -4.09% | |
| Form 10-Q U.S. SILICA HOLDINGS, For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.08% | -0.33% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Nov 03 | SEC filing · Form 8-K | SEC EDGAR | +3.30% | +1.19% | |
| U.S. Silica Holdings, Inc. Reports Third Quarter 2023 Results | Press release | PR Newswire | +3.30% | +1.19% | |
| U.S. Silica Announces Price Increases on Industrial and Specialty Products | Press release | PR Newswire | -1.88% | -2.29% | |
| U.S. Silica Announces Timing of Earnings Release and Investor Call | Press release | PR Newswire | -1.10% | -2.06% | |
| Form 8-K U.S. SILICA HOLDINGS, For: Oct 20 | SEC filing · Form 8-K | SEC EDGAR | +1.15% | -0.15% | |
| U.S. Silica Appoints Interim Chief Financial Officer | Press release | PR Newswire | +1.15% | -0.15% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the SLCA section they belong to.
Where else SLCA is measured.
SLCA earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Amarc Resources Ltd (AHR_CDNX) | 120 | 0.00% | 13% |
| Ressources Robex Inc (RBX_CDNX) | 120 | 0.00% | 32% |
| United States Lime & Minerals, Inc. (USLM) | 120 | -0.30% | 36% |
| Denison Mines Corp (DML_TSE) | 118 | +0.41% | 56% |
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 Basic Materials names, measured the same way →
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How the numbers are made.
How is U.S. Silica Holdings, Inc.'s median reaction calculated?
Every labeled SLCA 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 120 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. 46% of SLCA'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 SLCA'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.