BIST 100 falls sharply as short‑sale uptick rule is activated

BIST 100 uptick rule short selling Turkish stock market Fed decision

On 30 July 2026 the BIST 100 index of Borsa İstanbul slid about 1.5 % to roughly 13,293 points after a prior drop of more than 2 % triggered the market’s short‑sale uptick rule. The rule, also known as the “Uptick Rule”, requires any short‑sale transaction to be executed at a price higher than the previous trade price and was applied to all short‑sale order queues in the Pay Market until the close of the trading session.

The decline was reinforced by global factors: the U.S. Federal Reserve kept its policy rate in the 3.50‑3.75 % range, and ongoing Middle‑East geopolitical tensions dampened risk appetite. Within Turkey, the banking sector fell sharply while chemicals, petroleum and plastics posted modest gains of about 0.9 %. Total market turnover for the day was between 160 billion and 173 billion Turkish lira.

Bank of America clients contributed to the selling pressure, recording a net disposition of 1.2 billion TL. The biggest single sale was Yapı ve Kredi Bankası (YKBNK) with 609.2 million TL of shares sold.

Entities: Akbank · BIST 100 Index · BIST 100 index · Bank of America · Borsa Istanbul · Borsa İstanbul · U.S. Federal Reserve · Yapı ve Kredi Bank · Yapı ve Kredi Bankası

Claims

What the coverage asserts, and how well corroborated each claim is across sources.

[● 3 SOURCES] Global market pressure stemmed from the U.S. Federal Reserve keeping its policy rate at 3.50‑3.75 % and from Middle‑East geopolitical tensions. (ac8b3236-96f3-4202-8f9a-14c2985c935b, 817208a6-1b62-4264-b1e5-bebd5b8d4b24, 075c7635-7b7c-4c51-9422-59b6bc889b09)
[● 5 SOURCES] The BIST 100 index fell about 1.55 % to 13,292.93 points on 30 July 2026. (ac8b3236-96f3-4202-8f9a-14c2985c935b, 817208a6-1b62-4264-b1e5-bebd5b8d4b24, 966d58a1-a3f1-4839-ab38-a4f01fe5ae8c, 86b2c4)
[● 2 SOURCES] The uptick rule requires short sales to be executed at a price higher than the previous transaction price. (7115407c-08d6-4f59-acdd-f82a044e13d1, 1c3c8c64-f8af-4800-acb4-e56a6ebd22da)
[● 3 SOURCES] Sector performance showed chemicals, petroleum & plastics up about 0.95 % while the IT sector fell about 4.5 %. (ac8b3236-96f3-4202-8f9a-14c2985c935b, 817208a6-1b62-4264-b1e5-bebd5b8d4b24, 075c7635-7b7c-4c51-9422-59b6bc889b09)
[● 2 SOURCES] The uptick rule was applied to all short‑sale order queues in the Pay Market until the session’s end on 30 July 2026. (7115407c-08d6-4f59-acdd-f82a044e13d1, 1c3c8c64-f8af-4800-acb4-e56a6ebd22da)
[● 3 SOURCES] Total trading volume on the day was between 160 billion and 173 billion Turkish lira. (f71d2f02-d144-4f43-9232-2e7756ccd20e, 966d58a1-a3f1-4839-ab38-a4f01fe5ae8c, 86b2c4f9-c299-48ad-895b-9e16e3e486d9)
[○ 1 SOURCE] Bank of America customers sold a net 1.2 billion TL of shares, with Yapı ve Kredi Bankası the largest single sale at 609.2 million TL. (f71d2f02-d144-4f43-9232-2e7756ccd20e)
[● 2 SOURCES] A prior drop of more than 2 % in the BIST 100 index triggered the short‑sale uptick rule. (7115407c-08d6-4f59-acdd-f82a044e13d1, 1c3c8c64-f8af-4800-acb4-e56a6ebd22da)