Updated with early market action and comment from Jefferies analyst Ken Usdin.NEW YORK ( TheStreet) -- State Street ( STT) of Boston on Friday announced a 15% year-over-year increase in operating earnings, which CEO Joseph Hooley said reflected "continued resilience across our asset servicing and asset management businesses." On an operating basis, State Street reported fourth-quarter operating earnings available to common shareholders of $521 million, or $1.11 a share, beating the consensus estimate of a dollar a share, among analysts polled by Thomson Reuters. Operating earnings grew from $473 million, or 99 cents a share, in the third quarter, and $454 million, or 93 cents a share, in the fourth quarter of 2011. The company's shares were up 5% in early trading, to $52.85. Fourth-quarter GAAP earnings available to common shareholders of $468 million, or a dollar a share, included acquisition and restricting costs totaling $139 million, "primarily related to severance and benefits costs for targeted staff reductions expected to be substantially completed during 2013," which is expected to result in 630 staff positions being eliminated. Investment management fees -- again, on an operating basis -- grew 4% sequentially and 29% year-over-year, to $260 million in the fourth quarter, with the year-over-year increase "primarily due to stronger equity markets, net new business, and higher performance fees." Trading services revenue totaled $260 million in the fourth quarter, increasing from $232 million in the third quarter, but declining from $273 million in the fourth quarter of 2011, "primarily due to weakness in foreign-exchange trading, partially offset by stronger brokerage and other fees." Fourth-quarter processing fees (and other revenue) increased to a tax-adjusted $115 million, from $84 million the previous quarter and $60 million a year earlier, with the sequential increase mainly reflecting "higher revenue from joint ventures as well as a gain of $10 million from the sale of a Lehman Brothers-related asset," but also including "a tax-equivalent adjustment of $36 million related to tax credits generated by tax-advantaged investments." The year-over-year increase reflected a $25 million negative fair-value adjustment in the prior-year period, as well as the fourth-quarter 2012 tax-equivalent adjustment. The company's tax-adjusted net interest revenue was $600 million in the fourth quarter, declining from $611 million in the third quarter, but increasing from $577 million a year earlier, increased to The net interest margin narrowed to 1.36% in the fourth quarter from 144% the previous quarter and 1.40% a year earlier. The year-over-year increase reflected an increase in earning assets.