AHNIM STUDIO | Guru statistics | Reviewed November 1, 2026 (KST)
Did an issuer gaining more holders across the 17 tracked institutional groups also gain more of the panel’s reported equity weight? Not reliably. Among 211 issuers whose reporting-group count changed from Q1 to Q2 2026, 52—or 24.6%—moved in the opposite direction from their pooled reported-value share. Thirty-five gained holders while losing pooled weight; 17 lost holders while gaining pooled weight. This is a disclosure comparison, not evidence of buying, selling or conviction.
Three findings from the same-stock comparison
- Breadth and weight diverged for roughly one-quarter of issuers with changing breadth. Of 211 issuers with a non-zero holder-count change, 159 moved in the same direction and 52 did not.
- Sandisk was the clearest breadth-down, weight-up case. Its holder count fell from four to three, while its pooled eligible reported-value share rose from 0.342% to 1.379%.
- Weighting method changed the Capital One reading. Its holder count rose from three to four and its pooled share fell 0.167 percentage points, yet the equal-manager mean rose 0.126 points.
This article extends our issuer-breadth study and the shared-issuer value analysis. The Guru research and statistics hub retains the complete 17-group coverage universe and the underlying manager reports.
How breadth and weight are measured
We use the same verified Q1 and Q2 2026 panel of 17 institutional reporting groups. Multiple security classes and filing lines are collapsed to one canonical issuer within each manager and quarter. The eligible universe keeps reported common and ordinary shares, ADRs, REITs and operating-partnership equity. Put/call options, ETFs and ETPs, debt, warrants, preferred securities and dated equity units are excluded; six preserved instrument exceptions are removed before aggregation.
An issuer enters this study when at least two active groups reported a positive eligible value in Q1 or Q2. That produces 379 issuers. Holder breadth is the number of distinct active groups reporting the issuer. Pooled weight is the issuer’s reported value summed across the 17 groups divided by all eligible value reported by those groups. It repeats the same issuer across separate managers and is not unique AUM. The equal-manager mean averages each manager’s issuer weight across all 17 groups, assigning zero to non-holders.
| Q1→Q2 direction | Issuer count | Interpretation |
|---|---|---|
| Holder breadth up; pooled weight up | 84 | Same direction |
| Holder breadth up; pooled weight down | 35 | Strict divergence |
| Holder breadth down; pooled weight up | 17 | Strict divergence |
| Holder breadth down; pooled weight down | 75 | Same direction |
| Holder breadth unchanged; pooled weight up | 68 | Value/denominator changed |
| Holder breadth unchanged; pooled weight down | 100 | Value/denominator changed |
| Total eligible issuers | 379 | Held by ≥2 groups in either quarter |

The largest useful counterexamples
| Issuer | Holders Q1→Q2 | Pooled share Q1→Q2 | Pooled change | Equal-manager change |
|---|---|---|---|---|
| Sandisk (SNDK) | 4 → 3 | 0.342% → 1.379% | +1.037 pp | +0.612 pp |
| Moody’s (MCO) | 1 → 2 | 2.596% → 2.194% | −0.402 pp | −0.016 pp |
| Capital One (COF) | 3 → 4 | 0.329% → 0.162% | −0.167 pp | +0.126 pp |
| Netflix (NFLX) | 6 → 5 | 0.228% → 0.351% | +0.123 pp | +0.328 pp |
| Constellation Energy (CEG) | 2 → 3 | 0.326% → 0.227% | −0.099 pp | −0.140 pp |
| Texas Instruments (TXN) | 1 → 3 | 0.123% → 0.106% | −0.017 pp | approximately flat |
Why Sandisk, Moody’s and Capital One tell different stories
Sandisk: fewer holders, much more disclosed weight
Sandisk was not reported in Appaloosa’s eligible Q2 issuer set, taking the count from four to three. Yet its pooled share rose 1.037 points because the remaining disclosures became much larger in value: Situational Awareness rose from USD 724.4 million to USD 5.674 billion and Whale Rock from USD 508.0 million to USD 1.356 billion, while Bridgewater remained a small holder. The equal-manager mean also rose, so this was not only a large-portfolio pooling artifact. The Situational Awareness report preserves the position-level context. The filing does not reveal when, why or at what price the change occurred.
Moody’s: a new small holder did not offset denominator effects
Moody’s gained Bridgewater as a second disclosed holder. Berkshire’s reported Moody’s value increased from USD 10.762 billion to USD 11.173 billion, but its weight within Berkshire’s eligible disclosed portfolio fell from 4.09% to 3.73%. Bridgewater’s new reported weight was 0.08%. The result was broader panel representation but a lower pooled share and a slightly lower equal-manager mean. Neither measure proves a reduction in shares.
Capital One: pooled and equal-manager readings split
Capital One added Bridgewater to the previous Berkshire, Soros and Third Point holder set. Berkshire’s reported value fell from USD 1.304 billion to USD 601.9 million, while Third Point’s rose from USD 25.5 million to USD 165.5 million. Because Berkshire is much larger, pooled share fell. Because Third Point’s within-portfolio weight rose from 1.27% to 3.63% and Bridgewater appeared at 0.17%, the equal-manager mean increased. “More holders” and “more pooled exposure” therefore answer different questions.
What this changes in how we read 13F overlap
A holder-count increase is evidence that an issuer appeared in more members of this specific panel at quarter-end. It is not sufficient evidence that the panel collectively assigned more reported weight to that issuer. Conversely, a falling holder count can coexist with a much larger position among the remaining filers. Investors should read breadth, pooled weight and equal-manager weight together—and keep reported value separate from split-adjusted share-count analysis.
This article intentionally does not revive the held share-direction topic. A reliable increase/decrease count requires a complete split, merger, spinoff and identifier-adjustment review. Reported-value changes here may reflect share quantities, quarter-end prices, security-class mapping and changing portfolio denominators. We do not decompose those effects into inferred trades.
Reproducibility and next check
The normalized data retain reporting group, CIK, accession, report period, filing date, direct information-table URL, issuer label, CUSIP, class, quantity and unit, reported value and unit, instrument classification and canonical issuer key. The Q3 2026 filing deadline is November 16, so an incomplete September-quarter panel is not substituted for the matched Q1–Q2 sample. We will revisit multi-quarter persistence after the full 17-group Q3 panel and any material amendments are verified.
Three-line finding:
52 of 211 issuers with changing holder breadth moved opposite to pooled reported-value weight.
Sandisk lost one panel holder while its pooled weight rose 1.037 percentage points.
Capital One shows why pooled and equal-manager weighting can reach different directional conclusions.
Sources and original documents
U.S. SEC — Frequently Asked Questions About Form 13F, including the 2026 filing calendar; Form 13F Data Sets; and Form 13F instructions. Reviewed November 1, 2026. The filing register below links the source XML used in the calculation.
| Reporting group | Period | Accession | Official table | Official cover |
|---|---|---|---|---|
| ARK | Q1 2026 | 0001104659-26-059240 | information table | cover and summary |
| ARK | Q2 2026 | 0001104659-26-096910 | information table | cover and summary |
| Altimeter | Q1 2026 | 0001541617-26-000006 | information table | cover and summary |
| Altimeter | Q2 2026 | 0001541617-26-000008 | information table | cover and summary |
| Appaloosa | Q1 2026 | 0001656456-26-000002 | information table | cover and summary |
| Appaloosa | Q2 2026 | 0001656456-26-000003 | information table | cover and summary |
| Berkshire Hathaway | Q1 2026 | 0001193125-26-226661 | information table | cover and summary |
| Berkshire Hathaway | Q2 2026 | 0001193125-26-352200 | information table | cover and summary |
| Bridgewater | Q1 2026 | 0001350694-26-000002 | information table | cover and summary |
| Bridgewater | Q2 2026 | 0001350694-26-000003 | information table | cover and summary |
| Coatue | Q1 2026 | 0000919574-26-003501 | information table | cover and summary |
| Coatue | Q2 2026 | 0000919574-26-005478 | information table | cover and summary |
| Dalal Street | Q1 2026 | 0001549575-26-000009 | information table | cover and summary |
| Dalal Street | Q2 2026 | 0001549575-26-000015 | information table | cover and summary |
| Fundsmith | Q1 2026 | 0001569205-26-000005 | information table | cover and summary |
| Fundsmith | Q2 2026 | 0001569205-26-000012 | information table | cover and summary |
| Greenlight / DME | Q1 2026 | 0001172661-26-002341 | information table | cover and summary |
| Greenlight / DME | Q2 2026 | 0001172661-26-003786 | information table | cover and summary |
| Icahn reporting group | Q1 2026 | 0001539497-26-001469 | information table | cover and summary |
| Icahn reporting group | Q2 2026 | 0001539497-26-002243 | information table | cover and summary |
| Light Street | Q1 2026 | 0000935836-26-000261 | information table | cover and summary |
| Light Street | Q2 2026 | 0000935836-26-000422 | information table | cover and summary |
| Pershing Square | Q1 2026 | 0001172661-26-002336 | information table | cover and summary |
| Pershing Square | Q1 2026 | 0001172661-26-002339 | information table | cover and summary |
| Pershing Square | Q2 2026 | 0001172661-26-003790 | information table | cover and summary |
| Situational Awareness | Q1 2026 | 0002045724-26-000008 | information table | cover and summary |
| Situational Awareness | Q2 2026 | 0000935836-26-000418 | information table | cover and summary |
| Soros Fund Management | Q1 2026 | 0000902664-26-002529 | information table | cover and summary |
| Soros Fund Management | Q2 2026 | 0000902664-26-003507 | information table | cover and summary |
| Third Point | Q1 2026 | 0001040273-26-000002 | information table | cover and summary |
| Third Point | Q2 2026 | 0001040273-26-000003 | information table | cover and summary |
| Tiger Global | Q1 2026 | 0000919574-26-003362 | information table | cover and summary |
| Tiger Global | Q2 2026 | 0000919574-26-005427 | information table | cover and summary |
| Whale Rock | Q1 2026 | 0001172661-26-002159 | information table | cover and summary |
| Whale Rock | Q2 2026 | 0001172661-26-003733 | information table | cover and summary |
AHNIM STUDIO disclosure: We use structured calculation and AI-assisted research tools, then review source identity, classifications, formulas and article output. Errors are corrected transparently. This article is for informational and educational purposes only.

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