diff --git a/src/tui/perf_tab.zig b/src/tui/perf_tab.zig
index a82f7fb..36690ad 100644
--- a/src/tui/perf_tab.zig
+++ b/src/tui/perf_tab.zig
@@ -22,18 +22,20 @@ pub fn loadData(app: *App) void {
     app.candle_first_date = null;
     app.candle_last_date = null;
 
-    const candle_result = app.svc.getCandles(app.symbol) catch |err| {
+    const result = app.svc.getTrailingReturns(app.symbol) catch |err| {
         switch (err) {
-            zfin.DataError.NoApiKey => app.setStatus("No API key. Set TWELVEDATA_API_KEY"),
+            zfin.DataError.NoApiKey => app.setStatus("No API key. Set TIINGO_API_KEY"),
             zfin.DataError.FetchFailed => app.setStatus("Fetch failed (network error or rate limit)"),
+            zfin.DataError.TransientError => app.setStatus("Provider temporarily unavailable — try again later"),
+            zfin.DataError.AuthError => app.setStatus("API key auth failed — check TIINGO_API_KEY"),
             else => app.setStatus("Error loading data"),
         }
         return;
     };
-    app.candles = candle_result.data;
-    app.candle_timestamp = candle_result.timestamp;
+    app.candles = result.candles;
+    app.candle_timestamp = result.timestamp;
 
-    const c = app.candles.?;
+    const c = result.candles;
     if (c.len == 0) {
         app.setStatus("No data available for symbol");
         return;
@@ -42,15 +44,14 @@ pub fn loadData(app: *App) void {
     app.candle_first_date = c[0].date;
     app.candle_last_date = c[c.len - 1].date;
 
-    const today = fmt.todayDate();
-    app.trailing_price = zfin.performance.trailingReturns(c);
-    app.trailing_me_price = zfin.performance.trailingReturnsMonthEnd(c, today);
+    app.trailing_price = result.asof_price;
+    app.trailing_me_price = result.me_price;
+    app.trailing_total = result.asof_total;
+    app.trailing_me_total = result.me_total;
 
-    if (app.svc.getDividends(app.symbol)) |div_result| {
-        app.dividends = div_result.data;
-        app.trailing_total = zfin.performance.trailingReturnsWithDividends(c, div_result.data);
-        app.trailing_me_total = zfin.performance.trailingReturnsMonthEndWithDividends(c, div_result.data, today);
-    } else |_| {}
+    if (result.dividends) |divs| {
+        app.dividends = divs;
+    }
 
     app.risk_metrics = zfin.risk.trailingRisk(c);
 
@@ -64,7 +65,7 @@ pub fn loadData(app: *App) void {
         } else |_| {}
     }
 
-    app.setStatus(if (candle_result.source == .cached) "r/F5 to refresh" else "Fetched | r/F5 to refresh");
+    app.setStatus(if (result.source == .cached) "r/F5 to refresh" else "Fetched | r/F5 to refresh");
 }
 
 // ── Rendering ─────────────────────────────────────────────────