Tom Slater · William von Mueffling
what they both own
Both Tom Slater (Baillie Gifford (Long Term Global Growth)) and William von Mueffling (Cantillon Capital Management) hold 13 of the same stocks per their latest 13F filings — a Jaccard overlap of 14.4% across portfolios of 68 and 35 positions. Combined position weight in shared names: 55.6% of each investor's portfolio capacity.
Shared positions, ranked by joint conviction
Joint conviction = Tom Slater's portfolio weight + William von Mueffling's portfolio weight. A stock that both investors size heavily ranks higher than one both hold marginally. Position weight reflects each investor's most recent 13F filing (45-day SEC lag applies; filings can be 1-3 months old).
| Ticker | Slater | Mueffling | Joint | ConvictionScore |
|---|---|---|---|---|
| BN | 0.3% | 8.7% | 9.0% | 0 |
| GOOGL | 0.6% | 7.4% | 8.0% | 0 |
| TSM | 0.4% | 5.9% | 6.3% | 0 |
| SPOT | 4.1% | 1.5% | 5.6% | 0 |
| MSFT | 1.5% | 2.9% | 4.4% | 0 |
| ADI | 0.1% | 4.2% | 4.3% | 0 |
| CBRE | 0.3% | 3.7% | 4.0% | 0 |
| TMO | 0.4% | 2.6% | 3.0% | 0 |
| CRM | 0.1% | 2.8% | 2.9% | 0 |
| UBER | 0.3% | 2.6% | 2.9% | 0 |
| FAST | 0.1% | 2.6% | 2.7% | 0 |
| MCO | 0.3% | 1.2% | 1.5% | 0 |
| TME | 0.1% | 0.9% | 1.0% | 0 |
Compare individually
Data note. Position percentages are derived from each investor's most recent SEC Form 13F filing (45-day lag), filtered to disclosed long positions only. 13F filings exclude short positions, options (mostly), foreign-domiciled holdings, and positions below the reporting threshold. Joint conviction is a descriptive sum, not a recommendation. Per HoldLens compliance: this page is factual portfolio comparison, not investment advice. Always verify against the source filing before acting.
Frequently asked questions
How many stocks do Tom Slater and William von Mueffling both hold?
Both Tom Slater (Baillie Gifford (Long Term Global Growth)) and William von Mueffling (Cantillon Capital Management) hold 13 of the same stocks per their latest SEC Form 13F filings — a Jaccard overlap of 14.4% across portfolios of 68 and 35 positions.
What is the biggest shared position between Tom Slater and William von Mueffling?
Highest joint-conviction shared position: BN. Joint conviction is the sum of each investor's portfolio weight in the same stock. The complete ranked list (top 25) is in the table below; full data sourced from each fund's latest 13F filing (45-day SEC lag applies).
What is the Jaccard overlap between Tom Slater and William von Mueffling?
14.4% — the Jaccard coefficient between Baillie Gifford (Long Term Global Growth)'s and Cantillon Capital Management's tracked long positions. Calculated as |A ∩ B| / |A ∪ B| over shared tickers. Higher means more portfolio convergence; 0% means no shared names.
What is "joint conviction" on HoldLens?
Joint conviction is the sum of Tom Slater's and William von Mueffling's respective portfolio weights in a shared stock. 55.6% is the combined weight across all shared names — a descriptive measure of how much portfolio capacity both managers concentrate in overlapping positions, not a recommendation.