As of April 30, 2026, The 13F Tracker Desk processed 32 Form 13F-HR filings on the SEC EDGAR feed, with three filings carrying parsed holdings data: Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. ($40.68B AUM, 154 positions), Indivisible Partners (482 positions, aggregate value reported as $1.13T as filed), and River Road Asset Management ($8.82B AUM, 176 positions).
Executive Summary
As of April 30, 2026, The 13F Tracker Desk processed 32 Form 13F-HR filings on the SEC EDGAR feed, with three filings carrying parsed holdings detail and twenty-nine filings landing as shells, amendments, or master/sub-account exhibits without itemized holdings. The headline filing of the session is Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (CIK 0001545545), reporting $40.68B in aggregate value across 154 positions as of the April 30 filing date — a portfolio whose top 10 reads like a curated semiconductor and AI-infrastructure book: Micron Technology (MU) at $1.27B, NVIDIA (NVDA) at $1.05B, Seagate Technology (STX) at $970M, Broadcom (AVGO) at $938M, Western Digital (WDC) at $928M, ARM Holdings (ARM) at $916M, AMD (AMD) at $624M, Palantir (PLTR) at $620M, and ASML Holding (ASML) at $575M. Filing accession: 0001545545-26-000007.
The second-most-significant filing in our parsed set is River Road Asset Management, LLC (CIK 0001341401, $8.82B AUM, 176 positions, accession 0001341401-26-000012), a Louisville absolute-value shop whose top 10 reflects a textbook small/mid-cap value tilt: BJ's Wholesale Club, White Mountains Insurance, McGrath RentCorp, Berkshire Hathaway B, Murphy USA, GXO Logistics, Mid-America Apartment Communities, CoreCivic, Lithia Motors, and Assured Guaranty. The third parsed filing, Indivisible Partners (CIK 0002098400), submitted 482 positions with aggregate reported value of approximately $1.13T (accession 0002098400-26-000002); we flag the absolute-dollar figure for cross-verification at SEC EDGAR while noting that the relative concentration — Texas Instruments (TXN) reported as 22.2% of the book — is the substantive signal worth attention.
We remind readers that 13F filings publish 45 days after quarter-end, so the positions itemized today reflect Q1 2026 (March 31) snapshots and not real-time exposures. With the S&P 500 closing at 7,135.95 on April 29 (FRED series SP500), the VIX at 17.83 (FRED VIXCLS, April 28), and the federal funds rate at 3.64% (FRED DFF), the macro backdrop favors the semiconductor-and-AI concentration we see at Mitsubishi UFJ MS and the contrarian small-cap-value posture at River Road.
Today's top signals: (1) Mitsubishi UFJ MS — $40.68B book with eight of top 10 positions in semiconductors / AI infrastructure; (2) Indivisible Partners — 22.2% portfolio concentration in Texas Instruments; (3) River Road — small/mid-cap value book with no semiconductor exposure in top 10; (4) 29 of 32 filings landed as shell/amendment exhibits without itemized holdings.
Today In Numbers
| Metric | Value | Signal |
|---|
|---|---|---|
| Total 13F-HR filings processed | 32 | NEUTRAL |
|---|---|---|
| Filings with parsed holdings | 3 | NOTABLE |
| Notable institutional filers (flagged) | 2 | NOTABLE |
| Aggregate reported portfolio value (parsed) | ~$1.18T | NOTABLE |
| Largest single filing by AUM (parsed) | Indivisible Partners — ~$1.13T (as filed) | NOTABLE |
| Largest verifiable institutional filing | Mitsubishi UFJ MS — $40.68B | BULLISH |
| Most concentrated single name | Indivisible Partners → TXN @ 22.2% | NOTABLE |
| Mitsubishi UFJ MS top-10 concentration | $8.53B / $40.68B = 21.0% | NEUTRAL |
| River Road top-10 concentration | $2.11B / $8.82B = 23.9% | NEUTRAL |
| Semiconductor exposure (Mitsubishi UFJ MS top 10) | 8 of 10 names | BULLISH |
| S&P 500 close (April 29, FRED SP500) | 7,135.95 | BULLISH |
| VIX close (April 28, FRED VIXCLS) | 17.83 | NEUTRAL |
| Fed Funds Rate (April 28, FRED DFF) | 3.64% | NEUTRAL |
| 10Y–2Y Treasury spread (April 29, FRED T10Y2Y) | +0.50 | NEUTRAL |
Notable Filer Deep Dives
Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. — $40.68B AUM
Filing: 13F-HR, filed April 30, 2026. Accession 0001545545-26-000007. Filing URL: https://www.sec.gov/Archives/edgar/data/1545545/000154554526000007/. Portfolio: 154 positions, $40.68B aggregate value. Top 5 (Micron, NVIDIA, Seagate, Broadcom, Western Digital) = $5.16B / 12.7% of book.
| Rank | Company (Ticker) | Shares | Value ($M) | % of Portfolio |
|---|
|---|---|---|---|---|
| 1 | Micron Technology (MU) | 3,762,000 | 1,271 | 3.13% |
|---|---|---|---|---|
| 2 | NVIDIA Corporation (NVDA) | 6,025,000 | 1,051 | 2.58% |
| 3 | Seagate Technology (STX) | 2,475,000 | 970 | 2.38% |
| 4 | Broadcom (AVGO) | 3,030,000 | 938 | 2.31% |
| 5 | Western Digital (WDC) | 3,430,000 | 928 | 2.28% |
| 6 | ARM Holdings (ARM) | 6,057,000 | 916 | 2.25% |
| 7 | iShares Russell 2000 ETF (IWM) | 2,526,000 | 626 | 1.54% |
| 8 | Advanced Micro Devices (AMD) | 3,067,000 | 624 | 1.53% |
| 9 | Palantir Technologies (PLTR) | 4,236,000 | 620 | 1.52% |
| 10 | ASML Holding (ASML) | 435,000 | 575 | 1.41% |
What changed: Single-period snapshot — prior-quarter delta not available in our archive. Sector allocation (inbox classifier): Other 83.5%, Technology 7.8%, Healthcare 2.8%, Consumer 1.9%, Energy 1.4%, Financials 0.9%, Communications 0.9%, Automotive 0.8%. The signal: high-conviction expression of the AI-infrastructure capex cycle viewed through storage and memory more than GPU. Eight of top 10 are semiconductor or semi-adjacent; iShares Russell 2000 ETF (#7) is the only meaningful broad-market sleeve.
River Road Asset Management, LLC — $8.82B AUM
Filing: 13F-HR, filed April 30, 2026. Accession 0001341401-26-000012. Filing URL: https://www.sec.gov/Archives/edgar/data/1341401/000134140126000012/. Portfolio: 176 positions, $8.82B aggregate value. Top 5 (BJ's Wholesale, White Mountains, McGrath RentCorp, Berkshire B, Murphy USA) = $1.26B / 14.3% of book.
| Rank | Company (Ticker) | Shares | Value ($M) | % of Portfolio |
|---|
|---|---|---|---|---|
| 1 | BJ's Wholesale Club (BJ) | 3,503,473 | 345 | 3.91% |
|---|---|---|---|---|
| 2 | White Mountains Insurance (WTM) | 120,519 | 265 | 3.00% |
| 3 | McGrath RentCorp (MGRC) | 2,160,837 | 238 | 2.70% |
| 4 | Berkshire Hathaway B (BRK.B) | 455,439 | 218 | 2.47% |
| 5 | Murphy USA (MUSA) | 395,784 | 196 | 2.22% |
| 6 | GXO Logistics (GXO) | 3,541,141 | 184 | 2.08% |
| 7 | Mid-America Apartment Communities (MAA) | 1,428,079 | 174 | 1.98% |
| 8 | CoreCivic (CXW) | 9,011,396 | 170 | 1.93% |
| 9 | Lithia Motors (LAD) | 652,815 | 163 | 1.85% |
| 10 | Assured Guaranty (AGO) | 1,891,378 | 154 | 1.75% |
The signal: textbook small/mid-cap absolute-value posture — warehouse retail, specialty insurance, industrial rentals, logistics, apartment REITs, correctional facilities, auto retail, with Berkshire B as quasi-cash equity ballast. Zero direct semiconductor exposure in top 10 — the inverse of Mitsubishi UFJ MS.
Indivisible Partners — Aggregate ~$1.13T (482 positions, as filed)
Filing: 13F-HR, filed April 30, 2026. Accession 0002098400-26-000002. Filing URL: https://www.sec.gov/Archives/edgar/data/2098400/000209840026000002/. The desk flags absolute-dollar magnitude for verification at SEC EDGAR; substantive signal is concentration profile.
| Rank | Company (Ticker) | Reported $M | % of Portfolio |
|---|
|---|---|---|---|
| 1 | Texas Instruments (TXN) | 250,490 | 22.17% |
|---|---|---|---|
| 2 | American Century US Equity ETF | 40,099 | 3.55% |
| 3 | Apple (AAPL) | 28,403 | 2.51% |
| 4 | Seagate Technology (STX) | 17,621 | 1.56% |
| 5 | Distillate US ETF | 17,159 | 1.52% |
| 6 | Invesco QQQ Trust (QQQ) | 15,805 | 1.40% |
| 7 | Avantis Intl Equity ETF | 15,248 | 1.35% |
| 8 | JPMorgan Equity Premium (JEPI) | 15,099 | 1.34% |
| 9 | NVIDIA (NVDA) | 13,226 | 1.17% |
| 10 | Avantis EmgMkt ETF | 12,528 | 1.11% |
The signal: 22.2% single-name concentration in Texas Instruments wrapped by Avantis/QQQ/JEPI ETF sleeves — reads as model-portfolio engine with TXN as centerpiece. Triggers concentration scrutiny under our framework.
Sector Flow Analysis
Aggregating across the three parsed filings (using the inbox sector classifier, which sweeps unmatched issuers into 'Other'):
| Sector | Filings with Exposure | Total Value ($M) | Avg Position Size ($M) | Trend |
|---|
|---|---|---|---|---|
| Other (unclassified) | 3 | 9,548,830 | n/a | NEUTRAL |
|---|---|---|---|---|
| Technology | 3 | 180,879 | 7,536 | BULLISH |
| Healthcare | 3 | 44,615 | 2,973 | NEUTRAL |
| Financials | 3 | 65,516 | 8,189 | NEUTRAL |
| Consumer | 3 | 32,968 | 3,000 | NEUTRAL |
| Energy | 2 | 14,585 | 2,431 | NEUTRAL |
| Communications | 3 | 96,818 | 13,831 | NOTABLE |
| Automotive | 2 | 7,890 | 1,578 | NEUTRAL |
Two readable patterns: (a) Technology shows up across all three parsed filings, with Mitsubishi UFJ MS supplying the heaviest direct semiconductor weight and Indivisible Partners contributing the Texas Instruments concentration; (b) Communications shows an outsized average position size driven by River Road's single $94M position. The semiconductor-and-AI thesis flagged in prior 13F Tracker editions (April 27 / April 28 / April 29) continues to receive incremental institutional confirmation today via Mitsubishi UFJ MS's eight-of-ten top-10 weighting. Conversely, River Road is a standing reminder that the value-style cohort is not chasing the same thematic.
Activist And Concentration Watch
The single concentration alert from today's parsed set is Indivisible Partners' 22.2% position in Texas Instruments (TXN). Three things matter: (1) TXN itself is a non-typical activist target — a $200B+ market-cap analog/embedded semiconductor manufacturer with consistent FCF and an established dividend; (2) Indivisible Partners is not a name on the conventional list of activist filers (Icahn, Pershing Square, Elliott, Starboard, ValueAct, Trian, Engine No. 1) — surrounding portfolio composition (Avantis, JEPI, QQQ) looks more like a model-portfolio construction; (3) absolute-dollar magnitude requires verification on EDGAR before any 13D/13G read, since the 5%-of-outstanding threshold for TXN is roughly 45–46 million shares.
No filing in today's parsed set is from a recognized activist (Icahn, Ackman/Pershing Square, Elliott, Starboard, ValueAct, Trian). Mitsubishi UFJ MS top weights are 1–3% per name and do not constitute concentration alerts on a per-name basis, but the 8-of-10 top-10 semiconductor cluster represents thematic concentration that PMs benchmarked against broad cap-weighted indexes should note. River Road's top weight (BJ's Wholesale at 3.91%) is well below any activist threshold.
Contrarian Signals
River Road vs. Mitsubishi UFJ MS — same filing day, opposite expressions. The starkest divergence: Mitsubishi UFJ MS's eight-of-ten top-10 semiconductor weighting versus River Road's zero semiconductor names in its top 10. With S&P 500 near 7,136 and VIX at 17.83, a value shop with $8.82B AUM has chosen to publish a top 10 with no direct AI-infrastructure exposure. Bull case for River Road's posture: small-mid-cap value names like BJ, MGRC, GXO, CXW offer positive FCF yields and operational leverage to a softer-landing macro path; if AI capex cycle decelerates, this book has minimal direct vulnerability. Bear case: continuation of AI capex cycle into a third year of leadership leaves this book underperforming benchmarks dominated by semiconductor weight, and the cyclicals embedded in River Road's top 10 carry sensitivity to the consumer-spend cycle.
Indivisible Partners' Texas Instruments overweight vs. broad analog-semis sentiment. TXN historically trades as a low-beta dividend-yielding analog name with industrial/automotive end-market exposure. A 22.2% concentration in TXN paired with diversified ETF sleeves and only 1.17% NVDA weight is the inverse of the typical 2024–2026 AI-thematic book that overweights NVDA, AVGO, AMD, and HBM-memory. Bull: TXN's analog franchise is structurally advantaged at the trough of an industrial/auto semis cycle. Bear: 22% in any single name — even a stable franchise like TXN — is a statement of conviction that cuts against the diversification posture of the surrounding ETF sleeves.
What To Watch This Week
1. Texas Instruments (TXN) — earnings cadence and analog-semis margin trajectory (relevance: Indivisible Partners' 22.2% concentration). Quarterly print/guidance shapes the read on the largest single-name position in today's parsed set.
2. Micron (MU), Western Digital (WDC), Seagate (STX) — memory/storage demand updates (relevance: Mitsubishi UFJ MS top-three storage-and-memory weights). HBM allocation, enterprise-SSD pricing, HDD nearline data-center demand commentary tests the storage-heavy AI-capex thesis.
3. NVIDIA (NVDA) and Broadcom (AVGO) — AI-capex demand color (relevance: positions #2 and #4 in Mitsubishi UFJ MS top 10).
4. ASML Holding (ASML) — EUV/High-NA tool order book (relevance: Mitsubishi UFJ MS #10 weight). Order intake and Chinese-export commentary mark the lithography-supply read.
5. Federal Reserve next FOMC meeting (relevance: macro backdrop). With DFF at 3.64% and 10Y–2Y at +50bp, any policy-path shift would re-rate small-cap value (favorable to River Road) or growth/AI-infrastructure (favorable to Mitsubishi UFJ MS).
6. BJ's Wholesale Club (BJ) — quarterly print and membership-fee trajectory (relevance: River Road #1 weight).
7. CoreCivic (CXW) — federal contract renewals and detention-bed utilization (relevance: River Road #8 weight; 9.0M shares). Policy-driven detention demand is a binary signal.
Bottom Line
The institutional money is running two coherent and incompatible playbooks side by side on the same April 30 filing day. Mitsubishi UFJ Morgan Stanley Securities' $40.68B book stacks eight semiconductor or semi-adjacent names in its top 10 — Micron, NVIDIA, Seagate, Broadcom, Western Digital, ARM, AMD, ASML — and signals that a major Japanese-house overlay desk continues to express the AI capex cycle through storage, memory, networking, and IP/foundry layers, not just GPU. River Road Asset Management's $8.82B book takes the inverse posture: zero semiconductors in its top 10, with capital concentrated in BJ's Wholesale, White Mountains Insurance, McGrath RentCorp, Berkshire B, and Murphy USA — a clean expression of the small/mid-cap, capital-light, real-economy value style. The biggest concentration alert of the day is Indivisible Partners' 22.2% position in Texas Instruments, the largest single-name weight flagged in 13F Tracker this week. The #1 filing a portfolio manager should read in full today is Mitsubishi UFJ MS (accession 0001545545-26-000007 on SEC EDGAR), the cleanest available expression on this filing day of how a major foreign institutional house is choosing to participate in AI infrastructure. Readers are reminded that 13F filings publish 45 days after quarter-end and that the desk presents analysis, not buy or sell recommendations.
Cite This Report
The 13F Tracker Desk. "Mitsubishi UFJ Morgan Stanley's $40.7B book leans hard on semis — Micron, NVIDIA, Seagate, Broadcom dominate top 10." 13F Tracker, Edition #21, April 30, 2026. https://13ftracker.online/2026/04/30/13f-tracker-daily-intelligence/