Harbor Advisory Corp /ma/ reports 9.49% decrease in ownership of ABL / Abbott Laboratories

Abbott Laboratories

DE ˙ XTRA ˙ US0028241000

75,22 € ↑1,20 (1,62%)

2026-06-03
DEL PRIS

Security	DE:ABL / Abbott Laboratories
Institution	Harbor Advisory Corp /ma/
Latest Disclosed Ownership	24,316 shares
Latest Disclosed Value	$ 2,496,524

On May 7, 2026 - Harbor Advisory Corp /ma/ filed a 13F-HR form disclosing ownership of 24,316 shares of Abbott Laboratories (DE:ABL) valued at $2,159,747 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 26,866 shares of Abbott Laboratories. This represents a change in shares of -9.49% during the quarter. The current value of the position is $1,829,050 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-07	2026-03-31	13F	ABBOTT LABORATORIES	COM	002824100	24,316	-2,550	-9.49	2,497	-25.85	0.7502
2026-02-06	2025-12-31	13F	ABBOTT LABS	COM	002824100	26,866	-1,970	-6.83	3,366	-12.84	1.0183
2025-11-12	2025-09-30	13F	ABBOTT LABS	COM	002824100	28,836	-1,909	-6.21	3,862	-7.63	1.1422
2025-08-12	2025-06-30	13F	ABBOTT LABS	COM	002824100	30,745	-1,598	-4.94	4,182	-2.54	1.3324
2025-05-13	2025-03-31	13F	ABBOTT LABS	COM	002824100	32,343	-690	-2.09	4,290	14.83	1.4401
2025-01-29	2024-12-31	13F	ABBOTT LABS	COM	002824100	33,033	-1,823	-5.23	3,736	-5.97	1.2273
2024-10-21	2024-09-30	13F	ABBOTT LABS	COM	002824100	34,856	-1,730	-4.73	3,974	4.53	1.2971
2024-07-25	2024-06-30	13F	ABBOTT LABS	COM	002824100	36,586	-450	-1.22	3,802	-9.69	1.3130
2024-04-29	2024-03-31	13F	ABBOTT LABS	COM	002824100	37,036	-308	-0.82	4,210	2.41	1.4329
2024-02-05	2023-12-31	13F	ABBOTT LABS	COM	002824100	37,344	-1,052	-2.74	4,110	10.54	1.4717
2023-10-27	2023-09-30	13F	ABBOTT LABS	COM	002824100	38,396	-360	-0.93	3,719	-12.00	1.3477
2023-08-03	2023-06-30	13F	ABBOTT LABS	COM	002824100	38,756	-125	-0.32	4,225	7.32	1.4917
2023-05-04	2023-03-31	13F	ABBOTT LABS	COM	002824100	38,881	224	0.58	3,937	-7.23	1.5032
2023-02-07	2022-12-31	13F	ABBOTT LABS	COM	002824100	38,657	-40	-0.10	4,244	13.35	1.7338
2022-10-31	2022-09-30	13F	ABBOTT LABORATORIES	COM	002824100	38,697	-148	-0.38	3,744	-11.30	1.7242
2022-08-01	2022-06-30	13F	ABBOTT LABORATORIES	COM	002824100	38,845	187	0.48	4,221	-7.76	1.8498
2022-05-13	2022-03-31	13F	ABBOTT LABORATORIES	COM	002824100	38,658	-1,000	-2.52	4,576	-18.01	1.8364
2022-02-07	2021-12-31	13F	ABBOTT LABORATORIES	COM	002824100	39,658	280	0.71	5,581	19.97	2.2636
2021-11-12	2021-09-30	13F	ABBOTT LABORATORIES	COM	002824100	39,378	0	0.00	4,652	1.91	2.0183
2021-08-04	2021-06-30	13F	ABBOTT LABORATORIES	COM	002824100	39,378	-935	-2.32	4,565	-5.51	2.0580
2021-05-13	2021-03-31	13F	ABBOTT LABORATORIES	COM	002824100	40,313	2,230	5.86	4,831	15.85	1.9204
2021-02-16	2020-12-31	13F	ABBOTT LABORATORIES	COM	002824100	38,083	9,396	32.75	4,170	33.57	2.2072
2020-10-26	2020-09-30	13F	ABBOTT LABORATORIES	COM	002824100	28,687	-295	-1.02	3,122	17.81	3.0612
2020-08-04	2020-06-30	13F	ABBOTT LABORATORIES	COM	002824100	28,982	-1,765	-5.74	2,650	9.23	2.6849
2020-04-28	2020-03-31	13F	ABBOTT LABORATORIES	COM	002824100	30,747	-395	-1.27	2,426	-10.31	2.6015
2020-02-05	2019-12-31	13F	ABBOTT LABORATORIES	COM	002824100	31,142	-986	-3.07	2,705	0.63	2.2505
2019-10-28	2019-09-30	13F	ABBOTT LABORATORIES	COM	002824100	32,128	-229	-0.71	2,688	-1.21	2.3462
2019-07-30	2019-06-30	13F	ABBOTT LABORATORIES	COM	002824100	32,357	-150	-0.46	2,721	4.69	2.4021
2019-04-23	2019-03-31	13F	ABBOTT LABORATORIES	COM	002824100	32,507	-793	-2.38	2,599	7.89	2.3232
2019-02-05	2018-12-31	13F	ABBOTT LABORATORIES	COM	002824100	33,300	-571	-1.69	2,409	-3.06	2.3839
2018-10-17	2018-09-30	13F	ABBOTT LABORATORIES	COM	002824100	33,871	-80	-0.24	2,485	19.99	2.1516
2018-07-23	2018-06-30	13F	ABBOTT LABORATORIES	COM	002824100	33,951	-120	-0.35	2,071	1.42	1.8588
2018-05-07	2018-03-31	13F	ABBOTT LABORATORIES	COM	002824100	34,071	-737	-2.12	2,042	2.82	1.8709
2018-01-30	2017-12-31	13F	ABBOTT LABORATORIES	COM	002824100	34,808	34,808		1,986		1.8980

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.