Observatory · observe first

Follow the allocation change

Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.

Historical time machine
Historical observation
20182026
Universe›Information Technology›Semiconductor Materials & Equipment›Semiconductor Materials & Equipment

1 · Sector

Weight and 12M allocation change

Information Technology37.5%+17.67 ppFinancials12.1%+3.93 ppConsumer Discretionary11.7%+3.50 ppIndustrials10.0%+2.95 ppConsumer Staples6.5%+1.39 ppUtilities2.8%+0.81 ppCommunication Services2.5%+0.68 ppReal Estate2.3%+0.39 ppEnergy2.3%+0.30 ppHealth Care10.3%+0.23 ppMaterials2.1%-31.86 pp

2 · Industry

Inside Information Technology

Semiconductors14.40%+11.56 ppSystems Software8.95%+3.11 ppApplication Software3.69%+1.23 ppTechnology Hardware, Storage & Peripherals6.89%+0.55 ppCommunications Equipment1.09%+0.55 ppSemiconductor Materials & Equipment0.62%+0.23 ppIT Consulting & Other Services0.98%+0.15 ppElectronic Components0.25%+0.12 ppElectronic Manufacturing Services0.18%+0.07 ppElectronic Equipment & Instruments0.28%+0.06 ppInternet Services & Infrastructure0.13%+0.03 ppTechnology Distributors0.05%-0.00 pp

3 · Sub-industry

Inside Semiconductor Materials & Equipment

Semiconductor Materials & Equipment0.62%+0.228 pp
Concentrated

Most of this industry's gains came from a few companies.

View all contributions →
Semiconductor Materials & Equipment · weight
0.62%
Industry change · 12M
+0.23 pp
Semiconductor Materials & Equipment · contribution
+0.228 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2025 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Lam Research →
LRCX
United States$121.3bn0.256%+0.036 pp+0.234 pp+4.1%Yes
Applied Materials →
AMAT
United States$144.5bn0.305%+0.011 pp-0.010 pp-14.3%Yes
KLA Corporation →
KLAC
United States$11.6bn0.025%+0.002 pp+0.005 pp+7.8%Yes
Teradyne →
TER
United States$17.2bn0.036%+0.008 pp-0.000 pp-17.7%Yes

Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.