What Does a Repo Read? Collateral Equivalence and Ecological Meaning

Sustainable finance rests on an informational wager: once ecologicaldifferences become visible, financial valuation and allocation will change.This article tests that wager in repurchase agreements (repo), an immensemarket for short-term cash against securities. Drawing on Prodi’s ma-terial criterion of selective modification, Sharov’s minimal mind, Sharovand Vehkavaara’s distinction between protosemiosis and eusemiosis, andHayles’s cognitive assemblages, it analyses repo as a human–technicalcognitive assemblage and distributed minimal mind. Repo performs eu-semiosis with respect to financial objects: it identifies, classifies, models,and tracks securities, counterparties, and obligations. The central mech-anism is general collateral (GC). In tri-party repo, GC is the normaloperating form: parties pre-agree an eligibility universe without select-ing the particular issue, and an agent allocates—and, where permitted,substitutes—qualifying securities while the cash exposure remains ade-quately collateralised. Because claims with different ecological biographiescan occupy the same position without impairing its continuation, GC doesnot merely omit ecological information. It collapses ecologically heteroge-neous claims into one continuing collateral function and thereby deletestheir difference from the transaction’s operative distinctions. The relevantinvariant is the collateral function, not the identity or full characteristicsof the security; a repo seeking a particular security (a special) supplies amarket-level positive control. Ecological differences not already translatedinto recognised financial variables have no direct, independent significancefor financial viability over the transactional horizon, even when the activ-ities behind the claims have radically different biospheric consequences.Repo is not blind. Its ecological closure is a cognitive achievement