--- title: "BNY Mellon Q4 2025: The Custodian Giant's Own $568B Investment Portfolio" type: research slug: bny-mellon-q4-2025-custodian-investment-portfolio canonical_url: https://13finsight.com/research/bny-mellon-q4-2025-custodian-investment-portfolio published_at: 2026-04-13T20:39:10.074Z updated_at: 2026-04-13T20:39:10.078Z author: Sarah Mitchell author_title: Education Editor author_url: https://13finsight.com/authors/sarah-mitchell word_count: 416 locale: en source: 13F Insight --- # BNY Mellon Q4 2025: The Custodian Giant's Own $568B Investment Portfolio > Bank of New York Mellon reported $567.68 billion in 13F value for Q4 2025 across 33,186 positions. Here is how the world's largest custodian bank invests its own capital. Bank of New York Mellon reported $567.68 billion in 13F holdings for Q4 2025, spanning 33,186 positions. As the world's largest custodian bank, BNY Mellon occupies a unique position in institutional finance. Its 13F portfolio reflects not just investment management activity but the intersection of custody, wealth management, and proprietary investment operations across one of the oldest financial institutions in the United States. TL;DR BNY Mellon reported $567.68 billion in 13F value for Q4 2025 with a WhaleScore of 66.50 across 33,186 positions. The $567.68 billion 13F portfolio is a tiny fraction of BNY Mellon's $52.1 trillion in assets under custody and administration. Top holdings follow the mega-cap template: NVIDIA 5.92%, Apple 5.35%, Microsoft 5.30%. iShares Core S&P 500 ETF (IVV) appears at #9 with $9.23 billion, signaling index-tracking components alongside active holdings. AUM grew from $363.20 billion in Q3 2023 to $567.68 billion in Q4 2025, a 56.3% increase over nine quarters. Filing Snapshot MetricValue FilerBank of New York Mellon Corp CIK0001390777 QuarterQ4 2025 Reported 13F Value$567.68 billion WhaleScore66.50 Positions33,186 Custody/Administration AUM$52.1 trillion (corporate) Custody Giant, Investment Manager Second BNY Mellon's primary business is custody and administration of assets for other institutional investors. With $52.1 trillion in assets under custody, BNY Mellon holds securities on behalf of pension funds, sovereign wealth funds, mutual funds, and hedge funds worldwide. Its own 13F portfolio of $567.68 billion represents just over 1% of the assets it safeguards. This dual role matters for interpreting the 13F. Some holdings reflect BNY Mellon's proprietary investment management divisions (including Mellon Investments, Newton Investment Management, and Insight Investment). Others reflect model portfolios, seed investments, and treasury management activities. Top 10 Holdings #TickerValue ($B)Weight 1NVDA29.455.92% 2AAPL26.615.35% 3MSFT26.335.30% 4AMZN15.803.18% 5GOOGL13.052.63% 6AVGO10.382.09% 7META9.821.98% 8GOOG9.241.86% 9IVV9.231.86% 10JPM7.551.52% The IVV Signal: Index Tracking Within a Custodian Portfolio iShares Core S&P 500 ETF (IVV) at position #9 with $9.23 billion is a distinctive feature. Most traditional asset managers hold individual stocks rather than broad index ETFs in their top holdings. The presence of IVV suggests that part of BNY Mellon's 13F reflects model portfolio allocations or default investment options within its wealth management platform, similar to how Bank of America uses VTV and VUG in its Merrill Lynch managed portfolios. 33,186 Positions: Why So Many? BNY Mellon's position count dwarfs most filers. For comparison, Dimensional Fund Advisors holds around 15,000 positions across its factor-based strategies. BNY Mellon's 33,186 positions reflect the aggregation of multiple investment management subsidiaries filing under one 13F umbrella, each with different mandates and strategies. FAQ ## FAQ ### Why is BNY Mellon 13F value so much smaller than its custody assets? BNY Mellon custodies $52.1 trillion in assets belonging to other institutions. Its 13F of $567.68 billion represents only BNY Mellon own investment management activity, not the assets it holds on behalf of clients. ### Does BNY Mellon 13F represent a single investment strategy? No. BNY Mellon 13F aggregates holdings from multiple subsidiaries including Mellon Investments, Newton Investment Management, and Insight Investment, each with different strategies ranging from index tracking to active equity. ### Why does BNY Mellon hold IVV (iShares S&P 500 ETF) as a top position? The IVV position likely reflects model portfolio allocations within BNY Mellon wealth management platform, where broad index ETFs serve as default or core holdings for client accounts. ### How has BNY Mellon 13F value changed over time? BNY Mellon grew from $363.20 billion in Q3 2023 to $567.68 billion in Q4 2025, a 56.3% increase driven by market appreciation and investment management growth. --- Source: 13F Insight — https://13finsight.com/research/bny-mellon-q4-2025-custodian-investment-portfolio Author: Sarah Mitchell — https://13finsight.com/authors/sarah-mitchell Last updated: 2026-04-13T20:39:10.078Z