GigCapital7 Corp. - Class A Ordinary Share (GIG)
GIG moved a median of -0.10% 30 minutes after news, and -0.09% by the close. How GIG actually reacts to news — the realized, point-in-time move the market made, measured across 43 labeled events over the last three years with zero look-ahead.
GIG’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 12% | 26 |
| 30-min | -0.10% | 17% | 29 |
| 60-min | -0.12% | 25% | 32 |
| to close | -0.09% | 25% | 32 |
| Middle 50% of GIG reactions | -0.60% to 0.00% |
|---|---|
| Median reaction (30-min) | -0.10% |
| Measured reactions | 43 |
Half of all GigCapital7 Corp. - Class A Ordinary Share news events land between -0.60% and +0.00% 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 GIG moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to GIG's baseline. Nothing else.
Recent GIG events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K Hadron Energy, Inc. For: Jun 18 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-1 Hadron Energy, Inc. | SEC filing · Form S-1 | SEC EDGAR | — | — | |
| Form 8-K BigBear.ai Holdings, For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Hadron Energy, Inc. For: Jun 08 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Hadron Energy, Inc. For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Hadron Energy, Inc. For: May 22 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Hadron Energy, Inc. For: May 22 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| GigCapital7 Announces Closing of Business Combination with Hadron Energy | Press release | Business Wire | — | — | |
| GigCapital7 Corp. Announces Domestication in Furtherance of Business Combination with Hadron Energy | Press release | Business Wire | -1.01% | -2.52% | |
| GigCapital7 Corp. Announces Shareholder Approval of Business Combination with Hadron Energy | Press release | Business Wire | +1.06% | -11.72% | |
| Form 10-Q BigBear.ai Holdings, For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.72% | -24.89% | |
| Form 8-K BigBear.ai Holdings, For: May 05 | SEC filing · Form 8-K | SEC EDGAR | -1.72% | -24.89% | |
| GigCapital7 Corp. Announces Non-Redemption Agreements Funding in the Approximate Amount of at Least $19.3 Million in Conjunction with the Anticipated Closing of the Business Combination with Hadron Energy, Inc. | Press release | Business Wire | -0.28% | +0.00% | |
| Form DEFR14A BigBear.ai Holdings, | SEC filing · Form DEFR14A | SEC EDGAR | +0.00% | -0.28% | |
| Hadron Energy Secures U.S. Uranium Conversion Agreement with ConverDyn, Locking In Domestic Fuel Supply for the Halo Micro-Modular Reactor | Press release | Business Wire | -0.65% | -0.09% | |
| Form DEF 14A BigBear.ai Holdings, For: Jun 09 | SEC filing · Form DEF | SEC EDGAR | +0.00% | -0.28% | |
| Hadron Energy Secures Strategic Investment and Multi-Project Nuclear Deployment Framework with Smartland Energy | Press release | Business Wire | +0.00% | +0.09% | |
| Form 8-K BigBear.ai Holdings, For: Apr 21 | SEC filing · Form 8-K | SEC EDGAR | — | +0.28% | |
| Hadron Energy Submits Principal Design Criteria Whitepaper to U.S. Nuclear Regulatory Commission, Marking Pivotal Licensing Milestone for Halo Microreactor | Press release | Business Wire | -0.05% | -0.09% | |
| Hadron Energy Aligns Valuation for Business Combination to $600M, Signaling Long-Term Market Discipline After GigCapital7 Form S-4 Registration Statement Declared Effective | Press release | Business Wire | -0.09% | +0.00% | |
| Form PRE 14A BigBear.ai Holdings, For: Jun 09 | SEC filing · Form PRE | SEC EDGAR | — | +0.00% | |
| Form DEFA14A BigBear.ai Holdings, | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | +0.28% | |
| Form DEFA14A BigBear.ai Holdings, | SEC filing · Form DEFA14A | SEC EDGAR | — | -0.09% | |
| Hadron Energy Signs Strategic Collaboration with Paragon Energy Solutions for Microreactor Instrumentation & Control Development | Press release | Business Wire | — | +0.09% | |
| Hadron Energy Advances Halo Microreactor Licensing with NRC Public Meeting for Quality Assurance Program | Press release | Business Wire | -0.09% | -0.09% | |
| Hadron Energy Appoints Ken Canavan as Chief Operating Officer, Rahul Shukla as Chief Financial Officer, and Expands Technical, Regulatory, and Board Leadership | Press release | Business Wire | — | +0.19% | |
| GigCapital Global Enhances Its Private-to-Public Equity Platforms to Elevate High-Tech Firms From Private to Public Markets | Press release | Business Wire | +0.00% | +0.19% | |
| Hadron Energy Receives Nuclear Regulatory Commission Acceptance of Its Quality Assurance Program Description Topical Report | Press release | Business Wire | — | -0.05% | |
| Hadron Energy Unveils Distinguished Board of Directors to Lead the Company Following the deSPAC with GigCapital7 Into Proposed $1.2B Public Listing | Press release | Business Wire | +0.00% | -0.29% | |
| Hadron Energy and GigCapital7 Announce Filing of Registration Statement on Form S-4 in Connection with Proposed Business Combination | Press release | Business Wire | -0.10% | — | |
| Hadron Energy Strengthens Leadership Team with Appointments of Olivia Hand as Head of Reactor Design and Tim Bussey as Vice President of Business Development | Press release | Business Wire | — | -0.05% | |
| Hadron Energy Advances its Regulatory Readiness Ahead of $1.2Bn Merger | Press release | Business Wire | -0.28% | -0.28% | |
| Behind the Technology: How Hadron Energy’s ‘Halo’ Microreactor is Designed to Deliver 24/7 Power | Press release | Business Wire | +0.00% | +0.37% | |
| Hadron Energy Receives Letter of Support From the White House Before Government Shutdown | Press release | Business Wire | +0.00% | +0.28% | |
| Hadron Energy, Inc. Welcomes Professor Benoit Forget as an Advisor Supporting Breakthrough Reactor Physics Efforts | Press release | Business Wire | +0.43% | -4.16% | |
| Hadron Energy, an Emerging Nuclear Energy Company Advancing Innovative Light Water Micro Modular Reactors, to Go Public Via $1.2B Business Combination with GigCapital7 Corp. | Press release | Business Wire | +0.00% | -1.50% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the GIG section they belong to.
Where else GIG is measured.
GIG earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Earthworks Industries Inc (EWK_CDNX) | 43 | 0.00% | 0% |
| Firan Tech Group (FTG_TSE) | 43 | +0.81% | 64% |
| INTERTEK GROUP PLC ORD (IKTSF) | 43 | 0.00% | 8% |
| MUELLER PAUL CO (MUEL) | 42 | 0.00% | 29% |
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 GigCapital7 Corp. - Class A Ordinary Share's median reaction calculated?
Every labeled GIG 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 43 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. 17% of GIG'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 GIG'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.