STI is knocking on 5000.OCBC has a target of 5250 — and the index is getting close enough that the question shifts from "will we get there?" to "what happens when we do?"For Singapore investors, this matters beyond the headline number. When the STI runs, it tends to lift dividend stocks and REITs alongside it — DBS (SGX: D05), OCBC (SGX: O39), Singtel, the usual anchors.The local market has been quietly resilient this year while global investors were distracted by US volatility. That's the thing about the STI: it doesn't make noise, it just compounds.Watch for profit-taking around the 5000 psychological level. But the bigger picture looks constructive.