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Institutional Cluster ·Filed Oct 23, 2026

IRM

IRON MOUNTAIN INC
BEARISH
Impact 4/10
Horizonweeks Processed3d 11h ago
Institutional cluster: 3 buyers, 2 sellers (mixed)
Actionable Insight ▼ Bearish

Monitor upcoming 13F filings for further Vontobel reduction and any new large institutional buyers. The cluster is 45+ days stale; check current price action and any Q4 2026 catalysts (earnings, debt refinancing, or REIT sector moves) that may have reversed or confirmed the selling.

DirectionBearish
Confidencemedium
Horizonweeks
Latest settled — T+1d
IRM ▲ +2.84% at T+1d
SHORT call ✗ call lost -2.84% · α vs SPY -2.13% · entry $109.96 → $113.08
Next anchor: T+5d in 3d
Entry = T+0 close
Oct 23, 2026
via day close
T+1d
+2.84%
call -2.84% · α -2.13%
$113.08
settled 18h ago
T+5d
Pending
in 3d
T+20d
Pending
in 24d
T+60d
Pending
in 3mo

Executive Summary

A mixed institutional cluster in IRM for Q3 2026: three small asset managers added modest positions totaling $2.5M, while two sellers (led by Vontobel Holding) reduced holdings by $163.9M, overwhelmingly driven by Vontobel's 63% trim of a $242.5M position. The net $161.4M outflow signals a significant reduction in institutional exposure, though the buying side is too small to indicate a countervailing thesis.

Key Financial Metrics

Direction
distributing
Buy Value
$13.8M
Sell Value
$243.4M
Net Flow
-$161.4M

Institutional Positions

Net institutional flow: -$161.4M

▲ Buyers (3)

InstitutionActionChangePosition ValueValue Δ
Wealth Enhancement Advisory ServicesADD+29.4%$8.3M$1.4M
Abn Amro Investment SolutionsADD+36.7%$2.9M$478.0K
Hb Wealth ManagementADD+49.3%$2.6M$613.0K

▼ Sellers (2)

InstitutionActionChangePrev ValueValue Δ
Td Waterhouse CanadaTRIM-47.6%$894.0K-$339.0K
Vontobel HoldingTRIM-62.9%$242.5M-$163.5M

Key Facts

  • 3 small asset managers added $2.5M in aggregate new value
  • 2 sellers reduced holdings by $163.9M, led by Vontobel Holding trimming $163.5M (62.9% of its position)
  • Net institutional outflow of $161.4M in Q3 2026
  • All buyers are small wealth/asset managers; the sole large seller is a major institution

Financial Impact

Net institutional outflow of $161.4M in Q3 2026, with Vontobel Holding alone reducing its stake by $163.5M (from $242.5M to $79.0M).

institutional ownershipfloat

Risk Factors

  • 13F data is stale by 45+ days; the selling may have already been completed or reversed
  • Small buyers provide negligible offset to Vontobel's massive trim — no clear new institutional support

Investment Themes

Real Estate

Documents Analyzed

This report is based on 1 institutional 13F filing from SEC EDGAR.

DocumentAccession Number
INST-CLUSTER Data (Synthetic)inst-cluster-IRM-2026-Q3
19 reports for IRM
Performance horizon
80% Hit rate @ T+5 4 of 5 directional calls Went positive at some point 4 of 5 best @ T+20▲ +10.82%Mar 2, 2026
Filters
Rows
Reports for IRM — sortable, filterable
TypeNow
Oct 23, 2026
3d ago
Institutional Cluster
BEARISH ★ 4/10
$109.96awaiting T+5——
Oct 5, 2026
21d ago
Insider Cluster
BEARISH ★ 5/10
$116.50 $114.60▲ +1.63%▲ +1.49%—
Sep 11, 2026
6w ago
GOVT-CONTRACT
NEUTRAL ★ 3/10
$112.06 $116.89▲ +4.31%▲ +2.65%—
Sep 2, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$114.09 $114.29▲ +0.17%▲ +1.32%—
Aug 10, 2026
11w ago
Insider Cluster
NEUTRAL ★ 2/10
$122.39 $126.67▲ +3.50%▲ +3.90%—
Aug 5, 2026
11w ago
8-K
BULLISH ★ 7/10
$127.13 $124.36▼ −2.18%▼ −2.53%—
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 2/10
$116.38 $122.37▲ +5.15%▲ +5.43%—
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 2/10
$116.38 $122.37▲ +5.15%▲ +5.43%—
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 2/10
$116.38 $122.37▲ +5.15%▲ +5.43%—
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 4/10
$116.38 $122.37▲ +5.15%▲ +5.43%—
Showing 10 of 19

US Market Status

Market Closed — Opens in 7h 30m

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Report published Oct 23, 2026