4. AVAILABLE-FOR-SALE AND OTHER Securities

Listed below are the contractual maturities (under 1 year, 1-5 years, 6-10 years, and over 10 years) of available-for-sale and other securities at June 30, 2015 and December 31, 2014:

Non-marketable equity securities at June 30, 2015 and December 31, 2014 include $157.0 million of stock issued by the FHLB of Cincinnati, and $174.4 million and $174.5 million, respectively, of Federal Reserve Bank stock. Non-marketable equity securities are recorded at amortized cost.

The following tables provide amortized cost, fair value, and gross unrealized gains and losses recognized in OCI by investment category at June 30, 2015 and December 31, 2014:

At June 30, 2015, the carrying value of investment securities pledged to secure public and trust deposits, trading account liabilities, U.S. Treasury demand notes, and security repurchase agreements totaled $3.4 billion. There were no securities of a single issuer, which are not governmental or government-sponsored, that exceeded 10% of shareholders’ equity at June 30, 2015.

The following tables provide detail on investment securities with unrealized losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2015 and December 31, 2014:

The following table is a summary of realized securities gains and losses for the three-month and six-month periods ended June 30, 2015 and 2014:

Security Impairment

Huntington evaluates the available-for-sale securities portfolio on a quarterly basis for impairment. We conduct a comprehensive security-level assessment on all available-for-sale securities. Impairment would exist when the present value of the expected cash flows are not sufficient to recover the entire amortized cost basis at the balance sheet date. Under these circumstances, any impairment would be recognized in earnings. The contractual terms and / or cash flows of the investments do not permit the issuer to settle the securities at a price less than the amortized cost. Huntington does not intend to sell, nor does it believe it will be required to sell these securities until the amortized cost is recovered, which may be maturity. As of June 30, 2015, Management has evaluated available-for-sale securities with unrealized losses for impairment and concluded no OTTI is required. For the three-month and six-month periods ended June 30, 2015 and 2014, there were no OTTI losses recognized in the Unaudited Condensed Consolidated Statements of Income for securities evaluated for impairment as described above. The OTTI recognized in accumulated other comprehensive income on debt securities held by Huntington at June 30, 2015 and 2014 is $30.9 million.

The highest risk segments of our investment portfolio are the trust preferred CDO and 2003-2006 vintage private-label CMO portfolios. The CDOs are in the asset-backed securities portfolio. These segments are in run off, and we have not purchased these types of securities since 2008. The fair values of the private label CMO and CDO assets have been impacted by various market conditions. The unrealized losses are primarily the result of wider liquidity spreads on asset-backed securities and increased market volatility on non-agency mortgage that are collateralized by certain mortgage loans. In addition, the expected average lives of the asset-backed securities backed by trust-preferred securities have been extended, due to changes in the expectations of when the underlying securities would be repaid.

Private-label CMO securities are collateralized by first-lien residential mortgage loans. Of the $38.0 million of the private-label CMO securities reported at fair value at June 30, 2015, approximately $20.4 million are rated below investment grade. The securities are valued by a third party pricing specialist using a discounted cash flow approach and proprietary pricing model. The model uses inputs such as estimated prepayment speeds, losses, recoveries, default rates that are implied by the underlying performance of collateral in the structure or similar structures, discount rates that are implied by market prices for similar securities, collateral structure types, and house price depreciation / appreciation rates that are based upon macroeconomic forecasts.

Collateralized Debt Obligations are backed by a pool of debt securities issued by financial institutions. The collateral generally consists of trust-preferred securities and subordinated debt securities issued by banks, bank holding companies, and insurance companies. Many collateral issuers have the option of deferring interest payments on their debt for up to five years. A full cash flow analysis is used to estimate fair values and assess impairment for each security within this portfolio. A third party pricing specialist with direct industry experience in pooled-trust-preferred security evaluations is engaged to provide assistance estimating the fair value and expected cash flows on this portfolio. The full cash flow analysis is completed by evaluating the relevant credit and structural aspects of each pooled-trust-preferred security in the portfolio, including collateral performance projections for each piece of collateral in the security and terms of the security’s structure. The credit review includes an analysis of profitability, credit quality, operating efficiency, leverage, and liquidity using available financial and regulatory information for each underlying collateral issuer. The analysis also includes a review of historical industry default data, current/near term operating conditions, and the impact of macroeconomic and regulatory changes.  Using the results of our analysis, we estimate appropriate default and recovery probabilities for each piece of collateral then estimate the expected cash flows for each security. The fair value of each security is obtained by discounting the expected cash flows at a market discount rate. The market discount rate is determined by reference to yields observed in the market for similarly rated collateralized debt obligations, specifically high-yield collateralized loan obligations. The relatively high market discount rate is reflective of the uncertainty of the cash flows and illiquid nature of these securities. The large differential between the fair value and amortized cost of some of the securities reflects the high market discount rate and the expectation that the majority of the cash flows will not be received until near the final maturity of the security (the final maturities range from 2032 to 2035).

On December 10, 2013, the Federal Reserve, the OCC, the FDIC, the CFTC and the SEC issued final rules to implement the Volcker Rule contained in section 619 of the Dodd-Frank Act, generally to become effective on July 21, 2015. The Volcker Rule prohibits an insured depository institution and its affiliates (referred to as “banking entities”) from: (i) engaging in “proprietary trading” and (ii) investing in or sponsoring certain types of funds (“covered funds”) subject to certain limited exceptions. These prohibitions impact the ability of U.S. banking entities to provide investment management products and services that are competitive with nonbanking firms generally and with non-U.S. banking organizations in overseas markets. The rule also effectively prohibits short-term trading strategies by any U.S. banking entity if those strategies involve instruments other than those specifically permitted for trading.

On January 14, 2014, the five federal agencies approved an interim final rule to permit banking entities to retain interests in certain collateralized debt obligations backed primarily by trust preferred securities from the investment prohibitions of section 619 of the Volcker Rule.  Under the interim final rule, the agencies permit the retention of an interest in or sponsorship of covered funds by banking entities if certain qualifications are met.  In addition, the agencies released a non-exclusive list of issuers that meet the requirements of the interim final rule.  At June 30, 2015, we had investments in nine different pools of trust preferred securities.  Eight of our pools are included in the list of non-exclusive issuers.  We have analyzed the ICONS pool which was not included on the list and believe that it is more likely than not that we would not be required to sell and will be able to hold the security to recovery under the final Volcker Rule regulations.

The following table summarizes the relevant characteristics of our CDO securities portfolio, which are included in asset-backed securities, at June 30, 2015. Each security is part of a pool of issuers and supports a more senior tranche of securities except for the MM Comm III securities which are the most senior class.