diff --git a/docs/AUDIT_REDESIGN.md b/docs/AUDIT_REDESIGN.md
index be0ddbe..1d92993 100644
--- a/docs/AUDIT_REDESIGN.md
+++ b/docs/AUDIT_REDESIGN.md
@@ -55,7 +55,7 @@ Status: ⬜ open · 🟦 in PR · ✅ fixed (commit hash on the right).
 | --- | ---------------------------------------------------------------------------------------------------------------------------------- | :------: | :----: | ---------- |
 | D1  | News, ResearchCards, Screener show plain "Loading…" text. Should be skeleton placeholders to prevent layout jank.                  | 🟡       | ✅     | 0fb1d63    |
 | D2  | Light theme broke contrast in legacy tabs (`SettingsTab`, `ConfigTab`, etc.) which were styled for dark.                            | 🟡       | ✅     | 5ca8183    |
-| D3  | `TickerHeader` exchange is hard-coded "NASDAQ".                                                                                    | 🟢       | ⬜     |            |
+| D3  | `TickerHeader` exchange is hard-coded "NASDAQ".                                                                                    | 🟢       | ✅     | 1e502b9    |
 | D4  | `ScreenerView` "More sectors…" `<select>` doesn't visually highlight the chosen sector pill once selected.                          | 🟡       | ⬜     |            |
 | D5  | Layout is fixed-width (72 px sidebar + 308 px right panel). Breaks below ~1024 px viewport. No mobile-web responsive breakpoints.   | 🟠       | ✅     | a9c33b1    |
 | D6  | `VisualRuleBuilder` and `CodeStrategyEditor` use `setTimeout` without cleanup — leak warning if component unmounts mid-timer.        | 🟢       | ⬜     |            |
diff --git a/docs/COMPLETION_CHECKLIST.md b/docs/COMPLETION_CHECKLIST.md
index ab63835..59e899d 100644
--- a/docs/COMPLETION_CHECKLIST.md
+++ b/docs/COMPLETION_CHECKLIST.md
@@ -410,7 +410,7 @@ Expected platform result:
   the redesigned light shell without regressing dark-styled components that are
   still intentionally dark.
 
-- [ ] `D3` Remove hard-coded exchange.
+- [x] `D3` Remove hard-coded exchange. Implementation: `1e502b9`.
   Acceptance: exchange comes from profile/market metadata when available and
   falls back to a neutral placeholder, not always `NASDAQ`.