Calamos Advisors LLC

SEC CIK: 0001316507
Latest filing: Jul 31, 2026

SEC filings (opens in a new tab)

ABT holding history

Abbott Laboratories in every 13F filed by Calamos Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

ABT overview All 13F holders of ABT Full Q2 2026 holdings

Shares (Q2 2026): 243,068
Value: $22.1M
% of portfolio: 0.1%
Quarters held: 22; Since Q1 2021

Holdings of ABT by Calamos Advisors LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	243,068	$22.1M	0.1%	−135,706−35.8%	Reduced	Holders
Q1 2026	378,774	$38.9M	0.2%	−122,909−24.5%	Reduced	Holders
Q4 2025	501,683	$62.9M	0.3%	−8,840−1.7%	Reduced	Holders
Q3 2025	510,523	$68.4M	0.3%	+1,187+0.2%	Added	Holders
Q2 2025	509,336	$69.3M	0.3%	+26,310+5.4%	Added	Holders
Q1 2025	483,026	$64.1M	0.3%	+140,723+41.1%	Added	Holders
Q4 2024	342,303	$38.7M	0.2%	+417+0.1%	Added	Holders
Q3 2024	341,886	$39.0M	0.2%	−5,211−1.5%	Reduced	Holders
Q2 2024	347,097	$36.1M	0.2%	−8,875−2.5%	Reduced	Holders
Q1 2024	355,972	$40.5M	0.2%	−6,296−1.7%	Reduced	Holders
Q4 2023	362,268	$39.9M	0.2%	−3,079−0.8%	Reduced	Holders
Q3 2023	365,347	$35.4M	0.2%	+500+0.1%	Added	Holders
Q2 2023	364,847	$39.8M	0.2%	−138,527−27.5%	Reduced	Holders
Q1 2023	503,374	$51.0M	0.3%	−34,500−6.4%	Reduced	Holders
Q4 2022	537,874	$59.1M	0.3%	−55,306−9.3%	Reduced	Holders
Q3 2022	593,180	$57.4M	0.3%	+387+0.1%	Added	Holders
Q2 2022	592,793	$64.4M	0.3%	+36,615+6.6%	Added	Holders
Q1 2022	556,178	$65.8M	0.3%	+48,007+9.4%	Added	Holders
Q4 2021	508,171	$71.5M	0.3%	+12,119+2.4%	Added	Holders
Q3 2021	496,052	$58.6M	0.3%	+81,836+19.8%	Added	Holders
Q2 2021	414,216	$48.0M	0.2%	+62,409+17.7%	Added	Holders
Q1 2021	351,807	$42.2M	0.2%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.