§ 13F · FUND PROFILE
RHUMBLINE ADVISERS.
Index fund management, quantitative indexing
AUM · $124.5B (13F)Positions · 4172Turnover · 92% · Q1Filed · May 12, 2026
CONCENTRATION
30%
Top 10 holdings
NEW BUYS
+84
+$165M deployed
EXITS
0
No exits
SECTOR SHIFT
TECHNOLOGY → OTHER
-2pp · +3pp
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 12, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | NVDA | NVIDIA CORP COM | 42.00M | $7.3B | 6.3% | −1% |
| 2 | AAPL | APPLE INC COM STK | 25.82M | $6.6B | 5.6% | −3% |
| 3 | MSFT | MICROSOFT CORP COM | 13.00M | $4.8B | 4.1% | −2% |
| 4 | AMZN | AMAZON.COM INC COM | 16.59M | $3.5B | 3.0% | −1% |
| 5 | GOOGL | ALPHABET INC CAP STK CL A | 10.14M | $2.9B | 2.5% | −2% |
| 6 | AVGO | BROADCOM INC | 8.21M | $2.5B | 2.2% | +1% |
| 7 | GOOG | ALPHABET INC CAP STK CL C | 8.17M | $2.3B | 2.0% | −1% |
| 8 | META | META PLATFORMS INC | 3.84M | $2.2B | 1.9% | −4% |
| 9 | TSLA | TESLA INC | 4.84M | $1.8B | 1.5% | −1% |
| 10 | BRK/B | BERKSHIRE HATHAWAY INC DEL CL B NEW | 2.85M | $1.4B | 1.2% | −2% |
§ 02 · SECTOR ALLOCATION
Where the money is
Other49.6% (+3pp)
Technology14.8% (−2pp)
Semiconductors12.7% (±0)
Media8.1% (−1pp)
Retail7.2% (±0)
Financial Services5.8% (−1pp)
§ 03 · THE RHUMBLINE SIGNAL
AC read
RHUMBLINE ADVISERS is a Passive / Index fund managing $124.5 billion in assets. The fund runs a massive portfolio of 4,172 positions, broad diversification across holdings, with the top 10 accounting for 30%. Trading activity is aggressive at 92% quarterly turnover, with 84 new positions and 0 exits last quarter. Top sector allocations: Other (50%), Technology (15%), Semiconductors (13%).
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Busy quarter
+84 buys · −0 exits · 3753 changed
Q4 2025
Busy quarter
+106 buys · −0 exits · 3789 changed
Q3 2025
Busy quarter
+100 buys · −0 exits · 3731 changed
Q2 2025
Busy quarter
+237 buys · −0 exits · 3957 changed