<DOCUMENT>
<TYPE>EX-99.77O RULE 10F-3
<SEQUENCE>7
<FILENAME>77o53.txt
<TEXT>
<PAGE>

                                                            [LOGO OF BLACKROCK]

Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.   U.S. Registered Funds (Name of Fund, Aladdin Ticker):
    ISHARES NATIONAL MUNI BOND ETF (ISHMUNI)
    ISHARES NEW YORK MUNI BOND ETF (ISHNY)
    BlackRock Muni New York Intermediate Duration Fund, Inc. (MNE)
    BlackRock Municipal Income Investment Quality Trust (BAF)
    BlackRock Allocation Target Shares : Series E Portfolio (BATSE)
    BlackRock Municipal Income Investment Trust (BBF)
    BlackRock Strategic Municipal Trust (BSD)
    BlackRock Long-Term Municipal Advantage Trust (BTA)
    BlackRock MuniYield Investment Quality Fund (MFT)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of                    10-19-2017
Offering Commencement:

Security Type:             BND/MUNI

Issuer                     New York City Transitional Finance Authority

Selling Underwriter        Goldman Sachs & Co. LLC

Affiliated Underwriter(s)  [X] PNC Capital Markets LLC
                           [_] Other:

List of Underwriter(s)     Goldman Sachs & Co. LLC, Citigroup Global Markets
                           Inc, Jefferies LLC, J.P. Morgan Securities LLC,
                           ,Loop Capital Markets, Ramirez & Co.,Inc.,RBC
                           Capital Markets, Roosevelt & Cross, Inc, Siebert
                           Cisneros Shank & Co. LLC, Merrill Lynch, Pierce,
                           Fenner & Smith Incorporated, BNY Mellon Capital
                           Markets, LLC, Drexel Hamilton, LLC, Fidelity
                           Capital Markets, Barclays Capital Inc., Morgan
                           Stanley & Co. LLC, Janney Montgomery Scott LL,
                           Raymond James & Associates, Inc., Oppenheimer & Co,
                           TD Securities (USA) LLC, Stifel,Nicolaus & Company,
                           Inc., U.S. Bancorp Investments Inc., Academy
                           Securities, Blaylock Van, LLC, Wells Fargo
                           Securities, LLC, PNC Capital Markets LLC, FTN
                           Financial Securities Corp., Hilltop Securities,
                           Rice Financial Products Company, Williams Capital
                           Group L.P, Stern Brothers & Co.

TRANSACTION DETAILS

Date of Purchase           10-19-2017

Purchase Price/Share
(PER SHARE / % OF PAR)     $ 122.02 Total Commission, Spread or Profit   0.465%
                           $120.765
                           $107.006
                           $117.648

                                                                    Page 1 of 2

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Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


<TABLE>
<S>                                                                <C>
1.  Aggregate Principal Amount Purchased (a+b)                     $ 16,805,000

    a.  US Registered Funds
        (Appendix attached with individual Fund/Client purchase)   $ 15,000,000

    b.  Other BlackRock Clients                                    $  1,805,000

2.  Aggregate Principal Amount of Offering                         $990,000,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                   0.0169
</TABLE>

<PAGE>

Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[_] U.S. Registered Public Offering... [Issuer must have 3 years of continuous
                                       operations]
[_] Eligible Rule 144A Offering....... [Issuer must have 3 years of continuous
                                       operations]
[X] Eligible Municipal Securities
[_] Eligible Foreign Offering......... [Issuer must have 3 years of continuous
                                       operations]
[_] Government Securities Offering.... [Issuer must have 3 years of continuous
                                       operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X] The securities were purchased before the end of the first day on which any
    sales were made, at a price that was not more than the price paid by each
    other purchaser of securities in that offering or in any concurrent
    offering of the securities; and
[_] If the securities are offered for subscription upon exercise of rights, the
    securities were purchased on or before the fourth day before the day on
    which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:             Alisha Khan                       Date:   10-31-2017
                          --------------------------------         ------------
                          Global Syndicate Team Member

Approved by:                                                Date:
                          --------------------------------         ------------
                          Global Syndicate Team Member

<PAGE>

Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

DEFINITIONS

TERM                           DEFINITION
Fund Ratio                     Number appearing at the bottom of page 1 of 2
                               of the Rule 10f-3 Report form. It is the sum of
                               the Funds' participation in the offering by the
                               Funds and other accounts managed by BlackRock
                               divided by the total amount of the offering.

Eligible Foreign Offering      The securities are sold in a public offering
                               conducted under the laws of a country other
                               than the United States and

                               (a) the offering is subject to regulation in
                                   such country by a "foreign financial
                                   regulatory authority," as defined in
                                   Section 2(a)(50) of the Investment Company
                                   Act of 1940;

                               (b) the securities were offered at a fixed
                                   price to all purchasers in the offering
                                   (except for any rights to purchase
                                   securities that are required by law to be
                                   granted to existing security holders of the
                                   issuer);

                               (c) financial statements, prepared and audited
                                   as required or permitted by the appropriate
                                   foreign financial regulatory authority in
                                   such country, for the two years prior to
                                   the offering, were made available to the
                                   public and prospective purchasers in
                                   connection with the offering; and

                               (d) if the issuer is a "domestic issuer," i.e.,
                                   other than a foreign government, a national
                                   of any foreign country, or a corporation or
                                   other organization incorporated or
                                   organized under the laws of any foreign
                                   country, it (1) has a class of securities
                                   registered pursuant to section 12(b) or
                                   12(g) of the Securities Exchange Act of
                                   1934 or is required to file reports
                                   pursuant to section 15(d) of that act, and
                                   (2) has filed all the material required to
                                   be filed pursuant to section 13(a) or 15(d)
                                   of that act for a period of at least 12
                                   months immediately preceding the sale of
                                   securities (or for such shorter period that
                                   the issuer was required to file such
                                   material)

<PAGE>

Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

TERM                              DEFINITION
Eligible Municipal Securities     The securities:

                                  (a) are direct obligations of, or
                                      obligations guaranteed as to principal
                                      or interest by, a State or any political
                                      subdivision thereof, or any agency or
                                      instrumentality of a State or any
                                      political subdivision thereof, or any
                                      municipal corporate instrumentality of
                                      one or more States, or any security
                                      which is an industrial development bond
                                      (as defined in section 103(c)(2) of
                                      Title 26) the interest on which is
                                      excludable from gross income under
                                      certain provisions of the Internal
                                      Revenue Code;

                                  (b) are sufficiently liquid that they can be
                                      sold at or near their carrying value
                                      within a reasonably short period of
                                      time; and

                                  (c) either

                                      (1) are subject to no greater than
                                          moderate credit risk; or

                                      (2) if the issuer of the municipal
                                          securities, or the entity supplying
                                          the revenues or other payments from
                                          which the issue is to be paid, has
                                          been in continuous operation for
                                          less than three years, including the
                                          operation of any predecessors, the
                                          securities are subject to a minimal
                                          or low amount of credit risk.

                                  Also, purchases of municipal securities may
                                  not be designated as group sales or
                                  otherwise allocated to the account of any
                                  prohibited seller (i.e., an affiliated
                                  underwriter).

Eligible Rule 144A Offering       The securities are sold in an offering where

                                  (a) the securities are offered or sold in
                                      transactions exempt from registration
                                      under Section 4(2) of the Securities Act
                                      of 1933, Rule 144A thereunder, or Rules
                                      501-508 thereunder;

                                  (b) the securities were sold to persons that
                                      the seller and any person acting on
                                      behalf of the seller reasonably believe
                                      to include qualified institutional
                                      buyers, as defined in Rule 144A
                                      ("QIBs"); and

                                  (c) the seller and any person acting on
                                      behalf of the seller reasonably believe
                                      that the securities are eligible for
                                      resale to other QIBs pursuant to Rule
                                      144A.

Government Securities Offering    The security is issued or guaranteed as to
                                  principal or interest by the United States,
                                  or by a person controlled or supervised by
                                  and acting as an instrumentality of the
                                  Government of the United States pursuant to
                                  authority granted by the Congress of the
                                  United States; or any certificate of deposit
                                  for any of the foregoing.

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Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

TERM                              DEFINITION
U.S. Registered Public Offering.  The securities offered are registered under
                                  the Securities Act of 1933 that are being
                                  offered to the public.
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