Indra Sistemas and Telefónica weigh on the index, which is nearing two-week lows in Friday's session. The key technical support is at 17,916 points.
The Spanish stock market loses 0.68% and stands around 18,859 points in the last session of the week, according to FXStreet. The index touched 18,852 points, its lowest level since 8 October.
Since the opening at 18,956 points, the Ibex 35 has lost over 130 points in Friday's session and has recorded two consecutive negative days.
Among the most significant stocks are Indra Sistemas, which falls 3.09% to 59.84 euros, its lowest since 12 October and the second consecutive drop, and Telefónica, which declines 1.73% to 3.395 euros, at lows since 21 October after three sessions of gains.
On the macroeconomic front, Hamburg Commercial Bank (HCOB) published the preliminary reading for October of the eurozone Purchasing Managers' Index (PMI). The services PMI stood at 51.7 points, below the expected 52.8 and the 53 from September. The manufacturing PMI dropped to 52.4 points, compared to the estimated 52.8 and the 52.9 from the previous month.
Technically, the first short-term support is at 17,916 points, the low from 10 June, and the next at 17,239 points, the low from 4 May. On the upside, the nearest resistance is at 20,310 points, the all-time high from 13 August, about 1,450 points from the current level.
The support at 17,916 points is 943 points away from the index's value in the session.

