| Brief description of the
PX index |
| Index title |
PX |
| Index type |
Price index of blue chip issues |
| Weighting |
Market capitalization |
| Maximum |
weight 25% (on a decisive day) |
| No. of base issues |
Variable |
| Starting date |
5/4/ 1994 (index PX took over the history of index PX 50) |
| Base |
value 1,000.0 points |
| Formula |

M(t) = market capitalization of the base at time t
M(0) = market capitalization of the base as at the starting date (5/ 4/1994)
K(t) = chaining factor at time t |
| Calculation period |
9:11am – 4:08pm (trading within price-shaping segments) |
| Frequency of calculation |
Every 15 seconds |
| Periodical updating |
The first exchange day following the third Friday of March, June, September and December |
| Base
composition |
PX_base |
| Development
chart |
PX_chart |
| Historical
data |
PX.csv |
| Index description in detail |
PX_manual_en.pdf |