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Morgan Stanley Institutional Investment Advisors LLC

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13F filer, CIK 2026079, GREENWOOD VILLAGE, CO

Morgan Stanley Institutional Investment Advisors LLC reported $1,037,155,249 across 5 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-14.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0002026079-26-000004

Period
2026-03-31
Reported value
$1.04B
Holdings
5
Top 10 weight
100%
New
0
Sold out
0

Part of the filer group MORGAN STANLEY

How groups are built

Stakes and trades reported after 2026-03-31

13D, 13G and Form 4 filings by this filer's group, dated after the 13F period, on securities the quarter does not hold as shares.

  • ABUS ARBUTUS BIOPHARMA CORP: 13G/A 18,682,708 shares, 12.2% of the class, 13G/A filed 2026-10-07, 0000895421-26-000284Timeline
    Accepted , ingested
  • RIVERNORTH / DOUBLELINE: 13G/A 245,955 shares, 10.2% of the class, 13G/A filed 2026-10-13, 0000895421-26-000285
    Accepted , ingested

Largest buys vs the previous quarter

SecurityShares changeApprox. value
NHCadded+17$2.71K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
OIIreduced-494,017-$17.5M
WMreduced-56,350-$12.9M
ENBreduced-203,093-$11M
NHIreduced-136-$11K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2026

Share positions as resolved from 13F-HR 0002026079-26-000004, largest first. % of portfolio is the value over $1,037,155,249, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
ENBENBRIDGE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 8,431,738 shares; 2024Q4: 8,279,196 shares; 2025Q1: 7,995,764 shares; 2025Q2: 7,941,315 shares; 2025Q3: 7,748,227 shares; 2025Q4: 7,640,116 shares; 2026Q1: 7,437,023 shares 7,437,023$403M38.82%-203,093Timeline
WMWASTE MGMT INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,608,460 shares; 2025Q3: 1,584,799 shares; 2025Q4: 1,535,623 shares; 2026Q1: 1,479,273 shares 1,479,273$340M32.77%-56,350Timeline
NHCNATIONAL HEALTHCARE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 780,437 shares; 2024Q4: 772,110 shares; 2025Q1: 756,597 shares; 2025Q2: 752,165 shares; 2025Q3: 749,221 shares; 2025Q4: 1,038,787 shares; 2026Q1: 1,038,804 shares 1,038,804$166M16%+17Timeline
OIIOCEANEERING INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 3,947,022 shares; 2026Q1: 3,453,005 shares 3,453,005$122M11.81%-494,017Timeline
NHINATIONAL HEALTH INVS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 77,029 shares; 2026Q1: 76,893 shares 76,893$6.22M0.6%-136Timeline

How Q1 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0002026079-26-000004 base2026-05-14acceptance time not in the bulk data set