As we can see, the D/V ratio for this firm is calculated by (Total debt-Cash & short term investment)/Market Capitalization, and some of the D/V ratio is negative, so what does those negative D/V ratio mean, and what caused it turned to positve?

Balance Sheet as of: Dec-31-2012 Jan-30-2013 USD Dec-31-2013 Jan-31-2014 USD Dec-31-2014 Jan-30-2015 USD Dec-31-2015 Jan-29-2016 USD Dec-31-2016 Feb-10-2017 USD Dec-31-2017 Feb-02-2018 USD Dec-31-2018 Feb-01-2019 USD Dec-31-2019 Jan-31-2020 USD Dec-31-2020 Feb-03-2021 USD Dec-31-2021 Feb-04-2022 USD Pricing as of Currency Capitalization Detail Share Price Shares Out $272.76 454.6 $358.69 459.3 $354.53 464.4 $587.0 470.8 $827.46 477.0 $1,429.95 484.1 $1,626.23 491.2 $2,008.72 497.8 $3,312.53 503.6 $3,152.79 508.8 123,985.2 11,448.0 4,964.0 164,733.6 12.447.0 6,917.0 164,638.0 17,416.0 16.089.0 276,384.3 19,808.0 17,547.0 394,698.4 25,981.0 20.410.0 692,249.1 30,986.0 44,147.0 798,808.9 41,250.0 49,289.0 999,961.8 55,021.0 77,535.0 1,668,073.3 84,396.0 101,229.0 1,604,279.6 96,049.0 139,439.0 Market Capitalization - Cash & Short Term Investments + Total Debt + Pref. Equity + Total Minority Interest -- Long Term Marketable Securities = Total Enterprise Value (TEV) D/ Book Value of Common Equity + Pref. Equity + Total Minority Interest + Total Debt = Total Capital 117,501.2 159,203.6 705,410.1 1,647,669.6 -5.52% -3.47% -0.81% 163,311.0 -0.82% 10.741.0 274, 123.3 -1.43% 13,384.0 389,127.4 1.87% 19,285.0 1.00% 806,847.9 2.20% 43,549.0 1,022,475.8 1.00% 62,060.0 1,684,906.3 2.63% 93,404.0 8,192.0 9.746.0 27,709.0 138,245.0 4,964.0 13,156.0 6,917.0 16,663.0 16,089.0 26,830.0 17,547.0 30,931.0 20,410.0 39,695.0 44,147.0 71,856.0 49,289.0 92,838.0 77,535.0 139,595.0 101.229.0 194,633.0 139,439.0 277,684.0