The institutional index business suffered a massive $119 billion net outflow, primarily driven by a single client's large partial redemption. This event highlights a customer concentration risk and may trigger reviews of client retention strategies, service models, and platform capabilities to prevent further large-scale redemptions.
Filing excerpt
Institutional index AUM totaled $3.7 trillion at December 31, 2025, reflecting $119 billion of net outflows, driven by equity and fixed income. Net outflows were primarily driven by a single client's partial redemptions.
What this signalsFilings often name leadership changes, deals and spending plans.
sec-10kcustomerChurnGet every 10-K signal for BlackRock and the companies you sell to, in the tools you already use.
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This page shows a preview. The full sec-10k record in the Signal API and MCP can also have these 8 fields. Some fields are empty for some signals.
Company
linkedin_urlValue in the APIindustriesValue in the APIemployee_count_lowValue in the APIemployee_count_highValue in the APIrevenueValue in the APIdescriptionValue in the APISignal
signal_nameValue in the APIassociationValue in the APIGET /v1/signals/c93c0f92-6800-44eb-acc6-6c8ce5aa5956 returns this record as JSON. POST /v1/companies/enrich returns every signal for blackrock.com.
{
"signal_id": "c93c0f92-6800-44eb-acc6-6c8ce5aa5956",
"signal_type": "sec-10k",
"signal_subtype": "customerChurn",
"detected_at": "2026-03-03T05:50:02.882+00:00",
"company": {
"name": "BlackRock",
"domain": "blackrock.com"
},
"data": {
"detail": "The institutional index business suffered a massive $119 billion net outflow, primarily driven by a single client's large partial redemption. This event highlights a customer concentration risk and may trigger reviews of client retention strategies, service models, and platform capabilities to prevent further large-scale redemptions.",
"metrics": {
"timeframe": "current_year",
"dollar_context": "Net outflows from institutional index products due to a single client",
"dollar_millions": 119000
},
"summary": "Lost $119 billion in institutional index AUM from a single client's redemption",
"excerpts": "Institutional index AUM totaled $3.7 trillion at December 31, 2025, reflecting $119 billion of net outflows, driven by equity and fixed income. Net outflows were primarily driven by a single client's partial redemptions.",
"relevance": 0.8,
"sentiment": "negative",
"confidence": "high",
"source_url": "https://www.sec.gov/Archives/edgar/data/2012383/000119312526071966/blk-20251231.htm",
"filing_date": "2026-02-25",
"filing_year": 2026,
"fiscal_year_end": "12/31",
"sales_relevance": "Customer success tools needed",
"signal_category": "revenue"
}
}
curl https://signals.autobound.ai/v1/signals/c93c0f92-6800-44eb-acc6-6c8ce5aa5956 \
-H "X-API-KEY: $AUTOBOUND_API_KEY"curl -X POST https://signals.autobound.ai/v1/companies/enrich \
-H "X-API-KEY: $AUTOBOUND_API_KEY" \
-H "Content-Type: application/json" \
-d '{"domain":"blackrock.com","limit":20}'Long text fields are shortened on this page.
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