Tower Semiconductor Ltd. - Ordinary Shares (TSEM)
TSEM moved a median of +0.10% 30 minutes after news, and -0.26% by the close. How TSEM actually reacts to news — the realized, point-in-time move the market made, measured across 244 labeled events over the last three years with zero look-ahead.
TSEM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.10% | 55% | 244 |
| 30-min | +0.10% | 51% | 244 |
| 60-min | -0.12% | 48% | 244 |
| to close | -0.26% | 47% | 241 |
| Middle 50% of TSEM reactions | -1.19% to +1.15% |
|---|---|
| Median reaction (30-min) | +0.10% |
| Measured reactions | 244 |
Half of all Tower Semiconductor Ltd. - Ordinary Shares news events land between -1.19% and +1.15% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How TSEM reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Coverage initiations | 18 | -0.52% | 44% | +0.48% |
| Rating reiterations | 49 | +0.10% | 51% | -0.17% |
| Price-target raises | 12 | +0.85% | 75% | -0.07% |
Last 3 years, pulled 2026-09-21. 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 TSEM ranks against every other measured name →
That’s how TSEM usually reacts — get an email when it moves on news →Email me when TSEM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to TSEM's baseline. Nothing else.
Recent TSEM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K TOWER SEMICONDUCTOR LTD For: Oct 13 | SEC filing · Form 6-K | SEC EDGAR | -1.85% | +4.66% | |
| Tower Semiconductor and Semtech Expand SiGe Partnership to Scale Power-Efficient Analog Connectivity for Data Centers | Press release | GlobeNewswire | -1.85% | +4.66% | |
| Tower Semiconductor Announces Third Quarter 2026 Financial Results and Conference Call | Press release | GlobeNewswire | -1.85% | +4.66% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Sep 23 | SEC filing · Form 6-K | SEC EDGAR | -1.83% | -2.64% | |
| Tower Semiconductor to Showcase Technology Innovation and Industry Leadership at its 2026 Technical Global Symposium in the United States | Press release | GlobeNewswire | -1.83% | -2.64% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Sep 17 | SEC filing · Form 6-K | SEC EDGAR | +0.69% | +1.96% | |
| NewPhotonics® and Tower Semiconductor Begin High-Volume Shipments of Laser-Integrated, Serviceable Optical Engine PICs for Scale-Out and Scale Up AI Interconnect | Press release | GlobeNewswire | +0.69% | +1.96% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Sep 15 | SEC filing · Form 6-K | SEC EDGAR | +0.10% | +0.45% | |
| Tower Semiconductor to Highlight its High-Volume Silicon Photonics and SiGe Solutions for AI Infrastructure, Telecom and Emerging Applications at ECOC 2026 | Press release | GlobeNewswire | +0.10% | +0.45% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.73% | -2.70% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Aug 12 | SEC filing · Form 6-K | SEC EDGAR | +0.17% | -1.45% | |
| Tower Semiconductor to Participate in August and September Investor Conferences | Press release | GlobeNewswire | +0.17% | -1.45% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Aug 11 | SEC filing · Form 6-K | SEC EDGAR | -2.64% | -0.61% | |
| OpenLight and Tower Semiconductor Expand PH18DA Photonics Ecosystem to Accelerate Photonic IC Development | Press release | GlobeNewswire | -2.64% | -0.61% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Aug 04 | SEC filing · Form 6-K | SEC EDGAR | -4.07% | +6.25% | |
| Tower Semiconductor Announces Record Results for Revenue and Profitability for the Second Quarter 2026 with Third Quarter 2026 Record Revenue Guidance | Press release | GlobeNewswire | -4.07% | +6.25% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jul 14 | SEC filing · Form 6-K | SEC EDGAR | -1.10% | -5.90% | |
| Tower Semiconductor with METI Support Announces Strategic Capacity Expansion in Japan | Press release | GlobeNewswire | -1.10% | -5.90% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jul 07 | SEC filing · Form 6-K | SEC EDGAR | +2.37% | +4.18% | |
| Tower Semiconductor Announces Second Quarter 2026 Financial Results and Conference Call | Press release | GlobeNewswire | +2.37% | +4.18% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jul 06 | SEC filing · Form 6-K | SEC EDGAR | +2.37% | +4.18% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jun 22 | SEC filing · Form 6-K | SEC EDGAR | +0.19% | -0.19% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jun 18 | SEC filing · Form 6-K | SEC EDGAR | +2.05% | +3.85% | |
| Tower Semiconductor and Marvell Ship Over Five Million Coherent Photonic ICs | Press release | GlobeNewswire | +2.05% | +3.85% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Jun 15 | SEC filing · Form 6-K | SEC EDGAR | +4.07% | +4.02% | |
| IQE and Tower Semiconductor Announce Multi-year InP epiwafer Supply Agreement | Press release | GlobeNewswire | +4.07% | +4.02% | |
| Form SD TOWER SEMICONDUCTOR LTD | SEC filing · Form SD | SEC EDGAR | -4.35% | -9.94% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: May 21 | SEC filing · Form 6-K | SEC EDGAR | +1.38% | +7.31% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: May 13 | SEC filing · Form 6-K | SEC EDGAR | +4.33% | +6.62% | |
| Tower Semiconductor Reports First Quarter 2026 Financial Results with 15% Year over Year Revenue Growth | Press release | GlobeNewswire | +4.33% | +6.62% | |
| Tower Semiconductor Signs Customer Contracts for $1.3 Billion Silicon Photonics Revenue for 2027 | Press release | GlobeNewswire | +4.33% | +6.62% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: May 05 | SEC filing · Form 6-K | SEC EDGAR | -1.60% | +1.05% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: May 04 | SEC filing · Form 6-K | SEC EDGAR | -1.63% | -2.10% | |
| Tower Semiconductor to Participate in May and June Investor Conferences | Press release | GlobeNewswire | -1.63% | -2.10% | |
| Form 20-F TOWER SEMICONDUCTOR LTD For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.68% | +1.25% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Apr 27 | SEC filing · Form 6-K | SEC EDGAR | +0.28% | +1.02% | |
| Tower Semiconductor and Axiro Semiconductor Deliver High-Power, High-Efficiency SiGe ICs for Secure U.S. Defense Applications | Press release | GlobeNewswire | +0.28% | +1.02% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Apr 20 | SEC filing · Form 6-K | SEC EDGAR | -1.91% | +0.04% | |
| Tower Semiconductor Announces First Quarter 2026 Financial Results and Conference Call | Press release | GlobeNewswire | -1.91% | +0.04% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Mar 25 | SEC filing · Form 6-K | SEC EDGAR | -2.77% | -0.80% | |
| Tower Semiconductor and Nuvoton Technology Corporation Japan Announce Strategic Business Restructuring of TPSCo | Press release | GlobeNewswire | -2.77% | -0.80% | |
| Tower Semiconductor Announces Plans to Expand 300mm Capacity in Japan to Support Strong Customer Demand | Press release | GlobeNewswire | -2.77% | -0.80% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Mar 23 | SEC filing · Form 6-K | SEC EDGAR | +0.40% | +0.67% | |
| Tower Semiconductor and Coherent Demonstrate 400Gbps/lane Data Transmission with a Silicon Modulator in a Production-Ready Sipho Process | Press release | GlobeNewswire | +0.40% | +0.67% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Mar 17 | SEC filing · Form 6-K | SEC EDGAR | -2.87% | -0.44% | |
| Tower Semiconductor Extends its Leadership in BCD Performance with New Gen3 LDMOS Technology Addressing the ‘AI Power Wall’ | Press release | GlobeNewswire | -2.87% | -0.44% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Mar 16 | SEC filing · Form 6-K | SEC EDGAR | +2.02% | +3.60% | |
| Tower Semiconductor Teams up with Oriole to Advance AI Infrastructure and Networking with Nanosecond Optical Circuit Switching | Press release | GlobeNewswire | +2.02% | +3.60% | |
| Form 6-K TOWER SEMICONDUCTOR LTD For: Mar 04 | SEC filing · Form 6-K | SEC EDGAR | -1.73% | -2.31% | |
| Tower Semiconductor to Participate at OFC 2026 Highlighting its Silicon Photonics Platform for AI, Telecom and Emerging Applications | Press release | GlobeNewswire | -1.73% | -2.31% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the TSEM section they belong to.
Where else TSEM is measured.
TSEM earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Richardson Electronics, Ltd. (RELL) | 244 | -0.07% | 42% |
| ShotSpotter, Inc. (SSTI) | 244 | 0.00% | 47% |
| Ceragon Networks Ltd. - Ordinary Shares (CRNT) | 243 | -0.16% | 43% |
| Fabrinet Ordinary Shares (FN) | 243 | -0.13% | 45% |
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.
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Every name we’ve measured, in one place.
How the numbers are made.
How is Tower Semiconductor Ltd. - Ordinary Shares's median reaction calculated?
Every labeled TSEM 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 244 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. 51% of TSEM'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 TSEM'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.