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Rhumbline Advisers

Portfolio Profile

CIK: 0001115418 | BOSTON, MA

Investment Profile

Style

Index

Turnover

Very Low

Orientation

Index / Passive
Investment Commentary

Rhumbline Advisers employs a passive growth-oriented strategy with very low turnover, reflecting a disciplined commitment to broad market replication rather than active stock selection. The portfolio is heavily concentrated in mega-cap technology, with NVIDIA, Apple, and Microsoft alone representing 16.0% of assets, and the Technology sector comprising nearly 30% of total holdings. Despite holding over 4,100 positions across a $116.9 billion AUM, the top 15 holdings account for 37.2% of the portfolio, indicating passive index weightings naturally cluster in dominant large-cap names. The absence of sector bets or significant deviations from benchmark weights underscores a conviction in market efficiency and long-term compounding through diversified, low-cost exposure.

$132.6B
AUM
4,189
Positions
30.35%
Top 10 Conc.
42.53%
Top 25 Conc.

Top Holdings

#SecuritySharesValue% of Portfolio
1Nvidia Corp COM(NVDA)41,543,349$8.3B6.27%
2Apple Inc COM STK(AAPL)25,077,756$7.3B5.47%
3Microsoft Corp COM(MSFT)12,613,358$4.7B3.55%
4Amazon.com Inc COM(AMZN)16,023,278$3.8B2.88%

Sector Allocation

Latest filing, equity positions only

Technology34.55% · $45.8B
Financial Services11.69% · $15.5B
Industrials9.48% · $12.6B
Consumer Cyclical9.4% · $12.5B
Healthcare8.94% · $11.8B
Communication Services8.82% · $11.7B
Consumer Defensive4.27% · $5.7B

AUM History

$86.2B | 4352 pos.
$95.4B | 4317 pos.
$104.1B | 4304 pos.
$106.4B | 4422 pos.
$110.9B | 4249 pos.
$111.8B | 4223 pos.
5
Alphabet Inc Cap STK CL A(GOOGL)
10,284,105
$3.7B
2.77%
6Broadcom Inc(AVGO)8,151,966$3.1B2.32%
7Alphabet Inc Cap STK CL C(GOOG)8,249,403$2.9B2.20%
8Micron Technology(MU)1,966,447$2.3B1.71%
9Meta Platforms Inc(META)3,808,010$2.1B1.62%
10Tesla Inc(TSLA)4,879,546$2.1B1.55%
Unclassified3.18% · $4.2B
Energy3.06% · $4.1B
Real Estate2.63% · $3.5B
Utilities2.26% · $3.0B
Basic Materials1.72% · $2.3B

Sector Rotation

Quarter-over-quarter weight changes

SectorPrev %Curr %Change
Technology30.15%34.55%+4.4%
Energy4.06%3.06%-1%
Financial Services12.4%11.69%-0.71%
Consumer Cyclical10.08%9.4%-0.68%
Consumer Defensive4.93%4.27%-0.66%
Healthcare9.41%8.94%-0.47%
Communication Services9.22%8.82%-0.4%
Utilities2.56%2.26%-0.3%
Unclassified2.92%3.18%+0.26%
Basic Materials1.95%1.72%-0.23%
Real Estate2.76%2.63%-0.13%
Industrials9.56%9.48%-0.08%

Cap Size Rotation

Quarter-over-quarter weight changes by market cap

Cap SizePrev %Curr %Change
Mega Cap49.81%51.15%+1.34%
Large Cap38.79%37.23%-1.56%
Mid Cap7.26%7.13%-0.13%
Unclassified2.92%3.18%+0.26%
Small Cap1.17%1.23%+0.06%
Micro Cap0.05%0.07%+0.02%
$106.9B | 4182 pos.
$116.8B | 4194 pos.
$124.5B | 4172 pos.
$123.7B | 4187 pos.
$116.9B | 4151 pos.
$132.6B | 4189 pos.
Q3
23
Q4
23
Q1
24
Q2
24
Q3
24
Q4
24
Q1
25
Q2
25
Q3
25
Q4
25
Q1
26
Q2
26

Recent Activity

Quarter-over-quarter position changes

227
New
190
Closed
1889
Increased
1823
Decreased
254
Unchanged