--- title: Why CalSTRS Added $2.03B of IVV While Letting Nvidia Stay No. 1 in a $99.96B Q4 Book type: research slug: calstrs-q4-2025-ivv-add-near-100b-us-book canonical_url: https://13finsight.com/research/calstrs-q4-2025-ivv-add-near-100b-us-book published_at: 2026-04-11T07:54:54.823Z updated_at: 2026-04-11T07:54:57.699Z author: Marcus Chen author_title: Senior Market Analyst author_url: https://13finsight.com/authors/marcus-chen word_count: 731 locale: en source: 13F Insight --- # Why CalSTRS Added $2.03B of IVV While Letting Nvidia Stay No. 1 in a $99.96B Q4 Book > California State Teachers Retirement System pushed its Q4 2025 13F AUM to $99.96B, kept mega-cap leaders at the core, and added a new $2.03B IVV position to reinforce large-cap beta. CalSTRS is not supposed to look like a hot-money momentum fund. Yet its Q4 2025 13F still ended up looking unmistakably like the U.S. equity market's winners list — and then it layered on a fresh IVV position worth $2.03B. That combination is the real story. The California State Teachers Retirement System reported $99.96B of 13F AUM for Q4 2025, up from $97.50B in Q3, while keeping NVDA, AAPL, and MSFT as its three biggest disclosed positions. TL;DR CalSTRS reported $99.96B of Q4 2025 13F AUM and $93.49B in the article's disclosed holdings dataset. The top three holdings — NVDA, AAPL, and MSFT — made up 19.84% of the book. The biggest new position was IVV at $2.03B, a direct boost to large-cap index exposure. CalSTRS' filing looked less like a tactical rotation and more like a public pension expressing scale, liquidity, and benchmark-aware conviction in U.S. mega-cap leaders. Why the IVV addition matters more than it first appears CalSTRS is one of the largest public pension systems in the United States, and its broader total fund was measured in the hundreds of billions during 2025. Public equity remained the system's largest asset bucket, and CalSTRS' own risk materials showed that U.S. public equities continued to dominate overall portfolio risk. Against that backdrop, a new IVV position worth $2.03B is not a throwaway line item. It is a very visible statement that the fund still wanted cheap, scalable large-cap beta even while holding massive positions in individual mega-cap winners. That is what makes the filing interesting. Many institutions either concentrate in stock-picking or hide inside passive exposure. CalSTRS did both. It kept giant direct stakes in Nvidia, Apple, Microsoft, Amazon, and both Alphabet share classes, then added a multi-billion-dollar S&P 500 wrapper on top. Top holdings table: the pension's public-equity spine was still unmistakably mega-cap TickerValueWeightQoQ status NVDA$7.01B7.49%Held roughly flat AAPL$6.25B6.68%Held roughly flat MSFT$5.30B5.67%Held roughly flat AMZN$3.44B3.68%Held roughly flat GOOGL$2.84B3.04%Held roughly flat AVGO$2.41B2.58%Held roughly flat GOOG$2.35B2.52%Held roughly flat META$2.22B2.37%Held roughly flat IVV$2.03B2.17%NEW position TSLA$1.97B2.11%Held roughly flat The message is hard to miss: this is a giant public pension book that still accepted substantial dependence on the same mega-cap complex driving benchmark returns. CalSTRS did not try to hide that fact. It institutionalized it. Sector allocation table: technology still dominated the visible book Sector bucketValue in top 15 holdingsExamplesInterpretation Technology$20.97BNVDA, AAPL, MSFT, AVGO, PLTRTechnology remained the main source of upside and benchmark sensitivity. Consumer and internet platforms$12.82BAMZN, GOOGL, GOOG, META, TSLAPlatform and growth consumer exposure remained huge. ETF beta$2.03BIVVThe new IVV line added explicit index exposure in size. Healthcare$2.13BLLY, JNJHealthcare mattered, but far less than technology. Financials$3.37BJPM, BRK/B, VFinancial exposure was meaningful, though still secondary to technology and internet platforms. QoQ changes table: not many new names, but one very big one MoveTickerShare changeQ4 valueInterpretation NewIVVNew position$2.03BThe cleanest signal in the filing: add benchmark-like exposure at scale. IncreaseNFLX+884%$619.6MCalSTRS expanded exposure to another large-cap winner outside the very top tier. IncreaseNOW+392%$241.4MWorkflow software joined the list of meaningful adds. IncreaseTPL+188%$68.9MEven smaller adds pointed toward high-quality scarcity assets. DecreaseSCCO-23%$36.1MCalSTRS trimmed cyclical materials names while leaving the core intact. DecreaseKHC-15%$32.4MDefensive consumer exposure was a funding source around the edges. The broader trajectory is steady, not frantic. Reported 13F AUM climbed from $80.89B in Q1 2025 to $99.96B in Q4, while the article dataset's holdings value rose from $91.10B in Q3 to $93.49B in Q4. Only 16 new positions and 16 exits appeared in the top dataset. That is not a fund frantically searching for a new story. It is a large pension plan leaning into liquidity, scale, and benchmark-aware implementation. What did CalSTRS buy in Q4 2025? Beyond IVV, the new positions included CIEN, SNDK, BE, COHR, LITE, and RIVN. Those are interesting, but they are not the center of gravity. The center of gravity remained the same public-equity giants already steering the index. Analyst takeaway CalSTRS' Q4 2025 filing shows what scale looks like in public markets. The pension kept enormous direct stakes in the companies dominating benchmark performance, then added a $2.03B index sleeve to make sure broad-market participation stayed intact. For investors watching institutional behavior, that is the takeaway: even one of the biggest public pensions in the country still preferred to own the leaders and own the index that contains them. Next steps for research Browse the research hub View CalSTRS' filer page Track Nvidia ownership Track IVV holders Track Microsoft ownership ## FAQ ### What did CalSTRS buy in Q4 2025? The headline new position was IVV at $2.03B. CalSTRS also added smaller new lines such as CIEN, SNDK, BE, COHR, LITE and RIVN. ### How concentrated was CalSTRS in Q4 2025? The largest position, Nvidia, was 7.49% of the disclosed book. The top five holdings totaled 26.6%, and the top ten totaled 38.3%, so the portfolio was concentrated in mega-cap leaders but still diversified across hundreds of names. ### How large was CalSTRS' Q4 2025 U.S. 13F portfolio? CalSTRS reported $99.96B of Q4 2025 13F AUM, while the summed value of the disclosed holdings dataset used in this article was $93.49B. ### Why does the new IVV position matter? A $2.03B IVV addition suggests CalSTRS was comfortable expressing broad U.S. large-cap beta directly, rather than relying only on individual stock selection to shape the public-equity book. --- Source: 13F Insight — https://13finsight.com/research/calstrs-q4-2025-ivv-add-near-100b-us-book Author: Marcus Chen — https://13finsight.com/authors/marcus-chen Last updated: 2026-04-11T07:54:57.699Z