Merger arbitrage, spin-off dislocation, tender offers and activist escalation depend on what regulatory filings actually contain.
Event-driven mechanisms trade a corporate action with a legal timetable: a spin-off, merger, tender offer, repurchase or activist stake. The event is discrete and its date is documented, so a filing defines the study window before research begins.
The evidence, though, lives in regulatory documents, and this is where the cluster's most useful findings came from. A protocol that assumes a filing states something will fail if the disclosure rule that produced the filing never required it. Three separate mechanisms here failed for exactly that reason, and the failures are published together because the pattern is worth more than any of them individually.
The pattern is that each protocol specified a language test where the identity needed a structural fact. A registration statement was asked to state distribution mechanics that were not settled on the day it was filed. A narrative disclosure was asked to name a counterparty that the rule requiring the disclosure never required naming. A deal study was asked to require one specific form when what it actually needed was a timestamp that several documents supply.
So the redesign notes name the document that would carry the evidence before naming a threshold. They propose no threshold because choosing one after seeing which population clears it is selection, not specification. For spin-offs, the form type itself declares the event universe. The count comes from metadata rather than narrative extraction.
The event-driven documents
- Active ownership escalation; Schedule 13D Item 4 source-schema v3No heading phrase, minimum length, active-intent classifier, ownership regex, sample row, threshold, or label is changed. Any machine failure is DATA_GATED.
- Author review for approval-gated research protocolsThe merger-announcement and Treasury-auction redesigns have passed their no-return structural tests, but software cannot decide that Arhan understands or…
- Merger arbitrage v2: point-in-time announcement identityThe original metadata protocol required one preceding Item 1.01 8-K inside 60 days for at least 80% of all target-side deal anchors. It failed at 67.02%.
- Repurchase and issuance flow: literature dossierThe literature supports a real economic family around corporate equity supply. Net share issuance has predicted lower subsequent cross-sectional returns…
- Repurchase and issuance flow: no-return SEC feasibility protocolThis audit measures data feasibility only. It may inspect filing metadata, XBRL facts, Item 703 tables, taxonomies, contexts, amendments, and extraction errors.
- Spin-off dislocation; initial Form 10 document-schema protocolNo company names, filings, or years may be removed because they are not genuine spin-offs. Form 10 is deliberately being tested as a noisy discovery source.
- Spin-off dislocation; literature and claim boundaryA completed corporate separation can create temporary price pressure and information frictions. These studies do not establish a modern executable sleeve.
- Spin-off dislocation; SEC Form 10 lineage protocolCan the complete 2016–2025 exchange-registration candidate universe be reconstructed from official quarterly EDGAR full indexes without starting from a modern…