{"sym": "PFO", "cik": 882071, "name": "Flaherty & Crumrine PREFERRED & INCOME OPPORTUNITY FUND INC", "bdc": false, "n_tender": 5, "ticker": "PFO", "report_filed": "2026-02-04", "ncols": 5, "nav_beg": [10.17, 8.94, 9.4, 12.05, 11.97], "nav_end": [10.33, 10.17, 8.94, 9.4, 12.05], "mkt_end": [9.54, 9.19, 7.72, 9.33, 12.51], "dist_tot": [0.65, 0.57, 0.58, 0.78, 0.83], "divs": [0.65, 0.57, 0.58, 0.78, 0.83], "gains": [0.0, 0.0, 0.0, 0.0, 0.0], "roc": [0.0, 0.0, 0.0, 0.0, 0.0], "ops": [0.81, 1.8, 0.12, -1.87, 0.9], "share_div": 1.0, "share_gains": 0.0, "share_roc": 0.0}