Industry	Market weight	12M change	Movement	Participation
Movies & Entertainment Lost weight for 1 consecutive month	1.44%	+1.34 pp	Accelerating	Concentrated
Diversified Banks Lost weight for 2 consecutive months	6.45%	-1.24 pp	Reversing downward	Concentrated
Aerospace & Defense Gained weight for 1 consecutive month	5.45%	-1.10 pp	Reversing downward	Concentrated
Industrial Conglomerates Gained weight for 1 consecutive month	2.27%	+1.06 pp	Accelerating	Concentrated
Systems Software Gained weight for 1 consecutive month	5.62%	+0.95 pp	Slowing	Concentrated
Biotechnology Lost weight for 4 consecutive months	2.40%	-0.71 pp	Reversing downward	Concentrated
Industrial Gases Gained weight for 5 consecutive months	0.86%	+0.65 pp	Slowing	Concentrated
Oil & Gas Exploration & Production Lost weight for 4 consecutive months	1.03%	-0.48 pp	Reversing downward	Concentrated
Semiconductors Gained weight for 1 consecutive month	3.07%	-0.43 pp	Reversing downward	Concentrated
Oil & Gas Equipment & Services Gained weight for 1 consecutive month	0.40%	-0.40 pp	Reversing downward	Concentrated

How are these descriptive states defined?

Gaining / losing: 12-month weight change above +0.005pp / below −0.005pp. Direction and speed are separate dimensions, not mutually exclusive recommendations.

Accelerating / slowing: compare the most recent 3M change with the preceding 3M change. Accelerating means a positive change speeds up by >0.02pp. Slowing means the magnitude of movement declines by >0.02pp. A falling industry can also slow.

Reversing: the last two 3M changes have opposite signs, outside a ±0.005pp tolerance. Persistence counts consecutive same-direction monthly changes.

Broad / concentrated: company attribution, not a market-cap concentration shortcut. Concentrated means the three largest same-direction contributors account for ≥70% of gross same-direction changes; otherwise broad requires ≥60% of constituents moving with the industry. Other cases are mixed.

Weights use matched S&P 500 members with SEC-reported shares and monthly prices. Companies without both data series are omitted; weights are normalised across matched members each month. These are simple market-cap estimates, not official float-adjusted S&P weights or measured investor flows.