MASSACHUSETTS FINANCIAL SERVICES CO /MA/
"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.
13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.
We backtested copying it anyway. Buying this fund's new positions the day each filing went public, over 51 quarters, returned +1.5% per quarter — versus +2.0% per quarter from simply owning every 13F stock. It beat that baseline in only 47.1% of quarters (excess t = -0.11, not statistically significant). Its filings tell you what it bought — not what you should buy.
Quarterly compounding, invested quarters only · entry after the actual SEC deadline plus a 2-day buffer
Top 20 holdings of 1003 · 2026 Q2
| Ticker | Value | Weight | QoQ |
|---|---|---|---|
| NVDA | $13.7B | | TRIM −4% |
| GOOGL | $10.5B | | ADD +23% |
| AAPL | $8.9B | | HOLD |
| AMZN | $8.8B | | ADD +24% |
| MSFT | $8.8B | | TRIM −20% |
| AVGO | $5.5B | | ADD +35% |
| TSM | $4.7B | | HOLD |
| KLAC | $4.5B | | TRIM −11% |
| JPM | $4.0B | | TRIM −16% |
| LIN | $3.3B | | ADD +4% |
| UBSG.SW | $3.2B | | TRIM −4% |
| CI | $2.9B | | TRIM −10% |
| MA | $2.8B | | TRIM −3% |
| JNJ | $2.7B | | TRIM −22% |
| 2M6.DE | $2.6B | | TRIM −7% |
| AON | $2.6B | | TRIM −9% |
| V | $2.5B | | TRIM −10% |
| WAT | $2.5B | | HOLD |
| STX | $2.5B | | HOLD |
| BDX | $2.5B | | TRIM −5% |
QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.
New positions in 2026 Q2
Method & Limitations
Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry is the first trading session after the actual SEC filing deadline plus a 2-day buffer. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.