--- title: "Basic Materials Sector 2025Q4: Where Active 13F Money Sits" type: research slug: basic-materials-sector-2025q4-13f-positioning-snapshot canonical_url: https://13finsight.com/research/basic-materials-sector-2025q4-13f-positioning-snapshot published_at: 2026-05-12T19:22:18.102Z updated_at: 2026-05-12T19:22:22.493Z author: Marcus Chen author_title: Senior Market Analyst author_url: https://13finsight.com/authors/marcus-chen word_count: 1357 locale: en source: 13F Insight --- # Basic Materials Sector 2025Q4: Where Active 13F Money Sits > The Basic Materials sector's 2025Q4 13F snapshot is bifurcated. Wheaton Precious Metals draws the deepest active-manager interest at $29B of reported institutional value; the second tier of metals, packaging, and steel names trails materially. This research piece maps the sponsorship. The Basic Materials sector is one of the most under-read parts of the US large-cap tape, sitting between energy and industrials in benchmark weight but rarely featuring in headline 13F coverage. The 2025Q4 13F cycle shows that institutional money has concentrated meaningfully within the sector — one name, Wheaton Precious Metals (WPM), draws $29.11 billion of reported institutional value across the covered top-tier holder set, and a second, Nucor (NUE), draws $22.56 billion. Those two names together account for the majority of the active-manager exposure to the sector across the names we surface here.This piece maps the institutional sponsorship across Basic Materials at the 2025Q4 cycle and identifies the active managers carrying the bulk of the active-conviction weight. Data is sourced from 13F filings dated December 31, 2025 (Form 13F-HR cycle filings due February 14, 2026) and from the corresponding 13D/G filings on the SEC EDGAR tape. The data set covers the top 15 institutional-value names in the sector at the time of analysis.For broader sector framing, this is a follow-on to the 13F Insight aggregate insights feed — the read-through to other recent sector research on Tech and Healthcare suggests that the Basic Materials active sponsorship is structurally thinner than tech / healthcare, but more concentrated where it does exist.Institutional value distributionThe institutional-value-per-name distribution across the covered Basic Materials tape is heavily skewed. Wheaton Precious Metals alone draws roughly $29 billion of reported value — more than the next eight covered names combined. The chart below shows the value distribution.Two interpretations of that distribution. The first is mechanical: precious-metals streaming companies like WPM run high-leverage exposure to underlying commodity prices (gold, silver) without the operating-cost volatility of a primary miner. That structure attracts institutional flows looking for commodity exposure without execution risk. The second is selective: WPM has been the single most concentrated bet inside the active-manager Basic Materials book for multiple quarters, suggesting an investment-strategy view rather than passive index inclusion.Nucor (NUE) at $22.56 billion of reported value is the steel-cycle anchor of the sector. The Nucor position size is unusual for a US steel producer — most steel exposure runs through indirect commodities ETFs rather than direct equity. The institutional weight reflects Nucor's particular structural position: domestic capacity, mini-mill cost advantage, and exposure to ongoing US infrastructure spend.The active-manager sponsorshipThe cross-sector filer list reveals which institutional managers actually carry the active-conviction weight in Basic Materials — not the size of their total book, but their willingness to allocate to the sector at a meaningful weight. The chart below shows the top filers across the covered top-15 stock universe by total invested value in the sector.The top of the list is dominated by passive-mandate complexes — BlackRock at $19.5B, State Street at $8.1B — that buy the sector mechanically through index weight. Per the platform's filer-classification rules, those allocations are not active conviction; they are index mandates. The names that matter for the active read are the entries that sit below the passive mega-complexes and run real concentrated weights inside their own portfolios.The standouts are:Capital World Investors at $4.88 billion across the covered universe — concentrated in WPM at $4.38B alone. This is the single most concentrated active-conviction position in Basic Materials in the 2025Q4 cycle.FMR LLC (Fidelity) at $4.25 billion across five covered stocks (WPM, SKY, LPX, NEM, NWL) — a more diversified Basic Materials exposure across precious metals, building products, and consumer packaging.First Eagle Investment Management at $3.18 billion across WPM and NEM — classic First Eagle precious-metals tilt.Norges Bank at $3.09 billion across five covered names — sovereign wealth allocation, structurally diversified.Berkshire Hathaway at $1.50 billion across NUE and LPX — one of the rare Basic Materials positions in the Berkshire book, anchored on Nucor's steel-cycle thesis.WPM as the institutional anchorWithin the sector, Wheaton Precious Metals is the institutional anchor by a wide margin. The top-10 13F holders concentrate $14.5+ billion of value into a single name. The chart below breaks down the active-manager sponsorship.Capital World Investors holds a $4.38B position in WPM — 37.31 million shares as of the 2025Q4 filing. That is unusually large for a single Basic Materials name in a large-fund-complex book. FMR follows at $2.06B (17.5 million shares). First Eagle holds $1.81B (15.4 million shares). The combined top-10 active book runs more than 100 million shares.The thesis behind that concentration is straightforward: WPM is a streaming company that pays an upfront cash payment to a producing miner in exchange for the right to buy a portion of future production at a fixed low cost. The economic exposure is therefore leveraged to underlying gold and silver prices with limited operating-cost downside — if a mine produces less, WPM's deliveries fall; if it produces more, WPM's deliveries rise; but the per-unit cost is locked in. Active managers seeking commodity-cycle exposure prefer this profile to either physical-commodity ETFs (which lack upside torque) or primary-miner equities (which carry operating leverage to costs that move against producers in cycle troughs).Reading the 13D/G tapeThe Basic Materials 13D/G tape during the 2025Q4 cycle was quiet. No major activist filer surfaced new positions during the period. The structural 13G filings during the late-March and late-April 2026 window followed the same Vanguard reorganization pattern visible across the broader US market — the predecessor Vanguard Group entity (CIK 0000102909) exit-filed 13G/A amendments and Vanguard Capital Management LLC (CIK 0002100119) initiated new 13G filings at the same percentage threshold. That is a reporting-structure reshuffle rather than a directional position change.The absence of activist filings is significant. Basic Materials has historically been a frequent target of operationally-focused activists (Carl Icahn-style cost-cut campaigns at steel and chemicals companies, Engine No. 1-style ESG campaigns at miners). The lack of activist pressure in the recent cycle suggests management teams across the sector have been doing the cost-takeout work without needing to be coerced.What to watch through the next two cyclesThe cleanest forward-looking anchors for the Basic Materials sector are:May 15, 2026 13F deadline — The 2026 Q1 reporting cycle captures filings dated March 31, 2026. That is the first window after the WPM-heavy 2025Q4 picture above, and it will reveal whether the Capital World Investors and First Eagle WPM weights held through the early-2026 gold price action.August 14, 2026 13F deadline — The 2026 Q2 cycle captures any institutional reaction to the early-2026 commodity macro — tariff policy outcomes, copper / aluminum price action, US infrastructure-spend disbursement cadence.Nucor Q2 2026 earnings — Late July 2026 release. The Nucor print is the cleanest read on whether the structural domestic-capacity thesis that anchors the Berkshire and FMR positions is delivering against the cycle.ConclusionBasic Materials in the 2025Q4 cycle reads as a sector where active conviction concentrates around two anchor names — Wheaton Precious Metals on the precious-metals side and Nucor on the steel-cycle side — and the second-tier covered names get exposure largely through diversified-mandate allocators. The single highest-conviction active position is Capital World Investors' $4.38B WPM book. The single most surprising holder mix is Berkshire Hathaway's quietly-held $1.5B Nucor position. The most boring read of the sponsorship picture — passive index complexes mechanically over-weight at the top of the holder list — is also the structural truth.For readers tracking the sector forward, the active concentration on WPM is the variable to watch. If Capital World Investors trims that position materially in either of the next two 13F cycles, that is a thesis break worth flagging. If they hold or add, the streaming-company thesis has institutional sponsorship through the next gold-price cycle.See more sector research on 13F Insight →FAQWhich stock has the most institutional 13F value in Basic Materials?Wheaton Precious Metals (WPM) leads the Basic Materials top-15 covered universe at $29.11 billion of reported institutional value in the 2025Q4 cycle, well ahead of Nucor at $22.56 billion. The two names together account for the majority of the active-manager exposure to the sector across the covered top tier.Who is the largest active holder of Wheaton Precious Metals?Capital World Investors holds $4.38 billion in WPM via 37.31 million shares as of the 2025Q4 filing. FMR LLC is second at $2.06 billion (17.5 million shares), followed by First Eagle Investment Management at $1.81 billion (15.4 million shares). ## FAQ ### Which stock has the most institutional 13F value in Basic Materials? Wheaton Precious Metals (WPM) leads the Basic Materials top-15 covered universe at $29.11 billion of reported institutional value in the 2025Q4 cycle, ahead of Nucor at $22.56 billion. The two names together account for the majority of active-manager exposure to the sector. ### Who is the largest active holder of Wheaton Precious Metals? Capital World Investors holds $4.38 billion of WPM via 37.31 million shares as of the 2025Q4 13F filing. FMR LLC is second at $2.06 billion (17.5 million shares), followed by First Eagle Investment Management at $1.81 billion (15.4 million shares). ### Is Berkshire Hathaway invested in Basic Materials stocks? Berkshire Hathaway holds approximately $1.50 billion across the covered Basic Materials top tier in the 2025Q4 cycle, concentrated in Nucor (NUE) and Louisiana-Pacific (LPX). The Nucor position anchors on the domestic steel-capacity thesis; the Louisiana-Pacific position is a longer-standing Berkshire building-products holding. ### Why is Wheaton Precious Metals so heavily owned by active managers? Wheaton Precious Metals is a streaming company that locks in low fixed per-unit costs by paying upfront cash to producing miners in exchange for future production deliveries. The structure gives leveraged exposure to underlying gold and silver prices without primary-miner operating-cost volatility. Active managers seeking commodity-cycle exposure prefer this profile to either physical-commodity ETFs or primary miners. --- Source: 13F Insight — https://13finsight.com/research/basic-materials-sector-2025q4-13f-positioning-snapshot Author: Marcus Chen — https://13finsight.com/authors/marcus-chen Last updated: 2026-05-12T19:22:22.493Z