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"common_close_dates": [ "2026-06-16", "2026-06-17", "2026-06-18", "2026-06-22", "2026-06-23", "2026-06-24", "2026-06-25", "2026-06-26", "2026-06-29", "2026-06-30", "2026-07-01", "2026-07-02", "2026-07-06", "2026-07-07", "2026-07-08", "2026-07-09", "2026-07-10", "2026-07-13", "2026-07-14", "2026-07-15", "2026-07-16", "2026-07-17", "2026-07-20", "2026-07-21", "2026-07-22", "2026-07-23", "2026-07-24", "2026-07-27", "2026-07-28", "2026-07-29", "2026-07-30", "2026-07-31", "2026-08-03", "2026-08-04", "2026-08-05", "2026-08-06", "2026-08-07", "2026-08-10", "2026-08-11", "2026-08-12", "2026-08-13", "2026-08-14", "2026-08-17", "2026-08-18", "2026-08-19", "2026-08-20", "2026-08-21", "2026-08-24", "2026-08-25", "2026-08-26", "2026-08-27", "2026-08-28", "2026-08-31", "2026-09-01", "2026-09-02", "2026-09-03", "2026-09-04", "2026-09-08", "2026-09-09", "2026-09-10", "2026-09-11" ], "return_dates": [ "2026-06-17", "2026-06-18", "2026-06-22", "2026-06-23", "2026-06-24", "2026-06-25", "2026-06-26", "2026-06-29", "2026-06-30", "2026-07-01", "2026-07-02", "2026-07-06", "2026-07-07", "2026-07-08", "2026-07-09", "2026-07-10", "2026-07-13", "2026-07-14", "2026-07-15", "2026-07-16", "2026-07-17", "2026-07-20", "2026-07-21", "2026-07-22", "2026-07-23", "2026-07-24", "2026-07-27", "2026-07-28", "2026-07-29", "2026-07-30", "2026-07-31", "2026-08-03", "2026-08-04", "2026-08-05", "2026-08-06", "2026-08-07", "2026-08-10", "2026-08-11", "2026-08-12", "2026-08-13", "2026-08-14", "2026-08-17", "2026-08-18", "2026-08-19", "2026-08-20", "2026-08-21", "2026-08-24", "2026-08-25", "2026-08-26", "2026-08-27", "2026-08-28", "2026-08-31", "2026-09-01", "2026-09-02", "2026-09-03", "2026-09-04", "2026-09-08", "2026-09-09", "2026-09-10", "2026-09-11" ], "matrix": { "HPE": { "HPE": 1.0, "DELL": 0.783465, "NTAP": 0.61118, "TSM": 0.366979, "SMTC": 0.518689, "QQQ": 0.511824 }, "DELL": { "HPE": 0.783465, "DELL": 1.0, "NTAP": 0.474105, "TSM": 0.394853, "SMTC": 0.454773, "QQQ": 0.509739 }, "NTAP": { "HPE": 0.61118, "DELL": 0.474105, "NTAP": 1.0, "TSM": 0.214128, "SMTC": 0.368965, "QQQ": 0.401077 }, "TSM": { "HPE": 0.366979, "DELL": 0.394853, "NTAP": 0.214128, "TSM": 1.0, "SMTC": 0.685197, "QQQ": 0.818127 }, "SMTC": { "HPE": 0.518689, "DELL": 0.454773, "NTAP": 0.368965, "TSM": 0.685197, "SMTC": 1.0, "QQQ": 0.648088 }, "QQQ": { "HPE": 0.511824, "DELL": 0.509739, "NTAP": 0.401077, "TSM": 0.818127, "SMTC": 0.648088, "QQQ": 1.0 } }, "sources": { "HPE,DELL,NTAP,TSM,SMTC": { "provider": "Yahoo Finance chart" }, "QQQ": { "provider": "Yahoo Finance chart", "captured_at": "2026-09-12T08:30:03.019890173Z" } } }, "limitations": [ "All price bars end on 2026-09-11; no 2026-09-12 intraday or incomplete bar is included.", "The OHLCV series use raw provider closes because all eight local histories expose OHLCV but no adjusted-close field.", "The local 60-return common window is available for HPE, DELL, NTAP, TSM, SMTC and QQQ only.", "XLE, SOXX and GRID are excluded from the matrix: their local artifacts contain 37, 35 and 37 sessions respectively, below the requested 61 closes needed for 60 returns.", "Fortum and Neste bars are present through 2026-09-11, but the acquisition artifact marks their venue-calendar completion as unavailable; their dates are retained without inferring an exchange-calendar certification.", "The indexed ETF comparison uses only the 34 exact local dates common to XLE, SOXX, GRID and QQQ; no missing session is filled." ], "indexed_comparison": { "method": "raw close indexed to 100 on the first common session; no interpolation", "symbols": [ "XLE", "SOXX", "GRID", "QQQ" ], "session_count": 34, "common_dates": [ "2026-07-27", "2026-07-28", "2026-07-29", "2026-07-30", "2026-07-31", "2026-08-03", "2026-08-04", "2026-08-05", "2026-08-06", "2026-08-07", "2026-08-10", "2026-08-11", "2026-08-12", "2026-08-13", "2026-08-14", "2026-08-17", "2026-08-18", "2026-08-19", "2026-08-20", "2026-08-21", "2026-08-24", "2026-08-25", "2026-08-26", "2026-08-27", "2026-08-28", "2026-08-31", "2026-09-01", "2026-09-02", "2026-09-03", "2026-09-04", "2026-09-08", "2026-09-09", "2026-09-10", "2026-09-11" ], "base_date": "2026-07-27", "last_date": "2026-09-11", "series": { "XLE": { "source": { "provider": "yahoo", "captured_at": "2026-09-12T09:04:31Z", "served_completed_end": "2026-09-11", "reference_close": "2026-09-11" }, "adjustment": { "price_field": "close", "method": "unadjusted provider OHLCV; stored artifact has no adjusted-close field" }, "points": [ { "date": "2026-07-27", "close": 58.36, "index_base_100": 100.0 }, { "date": "2026-07-28", "close": 57.5699, "index_base_100": 98.6462 }, { "date": "2026-07-29", "close": 58.65, "index_base_100": 100.4969 }, { "date": "2026-07-30", "close": 58.9599, "index_base_100": 101.0279 }, { "date": "2026-07-31", "close": 59.5499, "index_base_100": 102.0389 }, { "date": "2026-08-03", "close": 58.79, "index_base_100": 100.7368 }, { "date": "2026-08-04", "close": 58.52, "index_base_100": 100.2742 }, { "date": "2026-08-05", "close": 57.31, "index_base_100": 98.2008 }, { "date": "2026-08-06", "close": 58.1599, "index_base_100": 99.6571 }, { "date": "2026-08-07", "close": 57.5, "index_base_100": 98.5264 }, { "date": "2026-08-10", "close": 60.18, "index_base_100": 103.1186 }, { "date": "2026-08-11", "close": 60.93, "index_base_100": 104.4037 }, { "date": "2026-08-12", "close": 61.0299, "index_base_100": 104.5749 }, { "date": "2026-08-13", "close": 61.06, "index_base_100": 104.6265 }, { "date": "2026-08-14", "close": 61.9099, "index_base_100": 106.0828 }, { "date": "2026-08-17", "close": 62.58, "index_base_100": 107.231 }, { "date": "2026-08-18", "close": 63.68, "index_base_100": 109.1158 }, { "date": "2026-08-19", "close": 63.58, "index_base_100": 108.9445 }, { "date": "2026-08-20", "close": 63.75, "index_base_100": 109.2358 }, { "date": "2026-08-21", "close": 63.6399, "index_base_100": 109.0471 }, { "date": "2026-08-24", "close": 63.11, "index_base_100": 108.1391 }, { "date": "2026-08-25", "close": 62.06, "index_base_100": 106.34 }, { "date": "2026-08-26", "close": 62.43, "index_base_100": 106.974 }, { "date": "2026-08-27", "close": 62.29, "index_base_100": 106.7341 }, { "date": "2026-08-28", "close": 62.68, "index_base_100": 107.4023 }, { "date": "2026-08-31", "close": 63.9599, "index_base_100": 109.5954 }, { "date": "2026-09-01", "close": 64.7699, "index_base_100": 110.9834 }, { "date": "2026-09-02", "close": 65.0999, "index_base_100": 111.5488 }, { "date": "2026-09-03", "close": 64.62, "index_base_100": 110.7265 }, { "date": "2026-09-04", "close": 64.06, "index_base_100": 109.767 }, { "date": "2026-09-08", "close": 64.77, "index_base_100": 110.9836 }, { "date": "2026-09-09", "close": 65.31, "index_base_100": 111.9088 }, { "date": "2026-09-10", "close": 64.93, "index_base_100": 111.2577 }, { "date": "2026-09-11", "close": 65.14, "index_base_100": 111.6175 } ] }, "SOXX": { "source": { "provider": "yahoo", "captured_at": "2026-09-12T09:04:12Z", 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