UNITED STATESSECURITIES AND EXCHANGE COMMISSION Washington, DC 20549

FORM N-PX

ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED

MANAGEMENT INVESTMENT COMPANY

811-21986

Investment Company Act file number:

Hatteras Core Alternatives Institutional Fund, L.P. (Exact name of registrant as specified in charter)

6601 Six Forks Road, Suite 340

Raleigh, North Carolina 27615

(Address of principal executive offices) (Zip code)

David B. Perkins

6601 Six Forks Road, Suite 340

Raleigh, NC 27615

(Name and address of agent for service)

Registrant's telephone number, including area code: (919) 846-2324

Date of fiscal year end: March 31

Date of reporting period: July 1, 2017 – June 30, 2018

Item 1. Proxy Voting Record.

The Fund has not voted any proxies during the period covered by this report.

SIGNATURES

Pursuant to the requirements of the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant) Hatteras Core Alternatives Institutional Fund, L.P.             

By (Signature and Title) /s/ Candi Hughes                                                  

Candi Hughes

Treasurer

Date   July 10, 2018