Merck, Daiichi end plans to seek speedy approval of lung cancer ADC

Published 28 Sep 2026, 12:59 UTC. Updated 28 Sep 2026, 19:58 UTC.

The FDA indicated that the data generated so far wouldn’t support an accelerated clearance of “I-DXd,” a setback that erases an edge Merck and Daiichi had over multiple fast-moving competitors.

Directly affected

MRK Merck
Named in this report.

Indirectly affected

ACHC ACADIA HEALTHCARE COMPANY INC
GA selected ACHC as a RELATED security because its canonical security name directly matches this event's themes: healthcare. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
ASND ASCENDIS PHARMA A/S
GA selected ASND as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
ATYR ATYR PHARMA INC COM NEW
GA selected ATYR as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
BBIO BRIDGEBIO PHARMA INC
GA selected BBIO as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
CRDF CARDIFF ONCOLOGY INC COM
GA selected CRDF as a RELATED security because its canonical security name directly matches this event's themes: oncology. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
DVA DaVita HealthCare Partners, Inc.
GA selected DVA as a RELATED security because its canonical security name directly matches this event's themes: healthcare. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.

Price reaction, T-5 to T+3

Ticker	T-5	T-3	T-1	T0	T+1	T+2	T+3
MRK	—	—	—	—	—	—	—
ACHC	—	—	—	—	—	—	—
ASND	—	—	—	—	—	—	—
ATYR	—	—	—	—	—	—	—
BBIO	—	—	—	—	—	—	—
CRDF	—	—	—	—	—	—	—
DVA	—	—	—	—	—	—	—

The FDA indicated that the data generated so far wouldn’t support an accelerated clearance of “I-DXd,” a setback that erases an edge Merck and Daiichi had over multiple fast-moving competitors.

Source: BioPharma Dive

Disclosure records for Acadia Healthcare (ACHC) within two months of 28 Sep 2026

Gilbert Cisneros sell BridgeBio Pharma (BBIO) ($1,001 - $15,000). That is 1 days after publication, inside 30 days. The filing is listed beside the story “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC.”

Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).

The Taiwan Strait count beside this story

Taiwan Strait has 48 linked stories in the last 7 days and 48 in the last 30 on the page that also carries “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC.” The recent pace is rising.

Taiwan Strait stories

Who gains and who pays if Taiwan Strait stays in the story

Companies carried with this story

ACHC Acadia Healthcare
In “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC,” Acadia Healthcare (ACHC) is linked, with no stored direction, medium confidence. Reason on file: GA selected ACHC as a RELATED security because its canonical security name directly matches this event's themes: healthcare. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
ASND Ascendis Pharma A/S
In “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC,” Ascendis Pharma A/S (ASND) is linked, with no stored direction, medium confidence. Reason on file: GA selected ASND as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
ATYR aTYR PHARMA
aTYR PHARMA (ATYR) is linked, with no stored direction, medium confidence in the 28 Sep 2026 story “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC.” Reason on file: GA selected ATYR as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
BBIO BridgeBio Pharma
For “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC,” BridgeBio Pharma (BBIO) is linked, with no stored direction, medium confidence. Reason on file: GA selected BBIO as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
CRDF Cardiff Oncology
Cardiff Oncology (CRDF) is linked, with no stored direction, medium confidence in the 28 Sep 2026 story “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC.” Reason on file: GA selected CRDF as a RELATED security because its canonical security name directly matches this event's themes: oncology. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
DVA Davita
In “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC,” Davita (DVA) is linked, with no stored direction, medium confidence. Reason on file: GA selected DVA as a RELATED security because its canonical security name directly matches this event's themes: healthcare. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article

What Taiwan Strait means for Acadia Healthcare (ACHC)

The 28 Sep 2026 story “Merck, Daiichi end plans to seek speedy approval of lung cancer ADC” names Acadia Healthcare (ACHC) because of Taiwan Strait.

For Acadia Healthcare (ACHC), the reason on file says GA selected ACHC as a RELATED security because its canonical security name directly matches this event's themes: healthcare. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article

Ascendis Pharma A/S (ASND) is here too. Its reason reads: GA selected ASND as a RELATED security because its canonical security name directly matches this event's themes: pharma. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article

How strong the case is around Acadia Healthcare (ACHC)

46 out of 100

“Merck, Daiichi end plans to seek speedy approval of lung cancer ADC” scores 46 out of 100. The score uses 1 sources, and 6 linked companies.