Dimensional Fund Advisors Lp reports 1.51% decrease in ownership of YORW / The York Water Company

The York Water Company

US ˙ NasdaqGS ˙ US9871841089

Security	YORW / The York Water Company
Institution	Dimensional Fund Advisors Lp
Latest Disclosed Ownership	295,879 shares
Latest Disclosed Value	$ 9,009,921

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 295,879 shares of The York Water Company (US:YORW) valued at $9,009,516 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 300,429 shares of The York Water Company. This represents a change in shares of -1.51% during the quarter. The current value of the position is $8,959,216 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	YORK WTR	COM	987184108	295,879	-4,550	-1.51	9,010	-5.82	0.0004
2026-02-12	2025-12-31	13F	YORK WTR	COM	987184108	300,429	-20,864	-6.49	9,566	-2.12	0.0020
2025-11-12	2025-09-30	13F	YORK WTR	COM	987184108	321,293	-8,210	-2.49	9,774	-6.14	0.0021
2025-08-12	2025-06-30	13F	YORK WTR	COM	987184108	329,503	-9,620	-2.84	10,413	-11.46	0.0024
2025-05-13	2025-03-31	13F	YORK WTR	COM	987184108	339,123	-25,443	-6.98	11,761	-1.41	0.0029
2025-02-13	2024-12-31	13F	YORK WTR	COM	987184108	364,566	-8,757	-2.35	11,929	-14.70	0.0029
2024-11-07	2024-09-30	13F	YORK WTR	COM	987184108	373,323	715	0.19	13,985	1.19	0.0034
2024-08-09	2024-06-30	13F	YORK WTR	COM	987184108	372,608	-13,706	-3.55	13,820	-1.36	0.0036
2024-05-10	2024-03-31	13F	YORK WTR	COM	987184108	386,314	-6,974	-1.77	14,012	-7.76	0.0038
2024-02-07	2023-12-31	13F	YORK WTR	COM	987184108	393,288	-538	-0.14	15,189	2.88	0.0044
2023-11-09	2023-09-30	13F	YORK WTR	COM	987184108	393,826	-548	-0.14	14,765	-9.28	0.0048
2023-08-09	2023-06-30	13F	YORK WTR	COM	987184108	394,374	-476	-0.12	16,276	-7.79	0.0052
2023-05-12	2023-03-31	13F	YORK WTR	COM	987184108	394,850	1,455	0.37	17,650	103,717.65	0.0059
2023-02-09	2022-12-31	13F	YORK WTR	COM	987184108	393,395	11,855	3.11	18	-99.88	0.0052
2022-11-10	2022-09-30	13F	YORK WTR	COM	987184108	381,540	-227	-0.06	14,662	-5.00	0.0056
2022-08-12	2022-06-30	13F	YORK WTR	COM	987184108	381,767	1,266	0.33	15,433	-9.81	0.0055
2022-05-13	2022-03-31	13F	YORK WTR	COM	987184108	380,501	-1,829	-0.48	17,111	-10.09	0.0053
2022-02-09	2021-12-31	13F	YORK WTR	COM	987184108	382,330	-8,007	-2.05	19,032	11.62	0.0058
2021-11-12	2021-09-30	13F	YORK WTR	COM	987184108	390,337	-2,603	-0.66	17,050	-4.21	0.0055
2021-08-12	2021-06-30	13F	YORK WTR	COM	987184108	392,940	-15,625	-3.82	17,800	-11.03	0.0056
2021-05-14	2021-03-31	13F	YORK WTR	COM	987184108	408,565	-26,436	-6.08	20,007	-1.30	0.0066
2021-03-08	2020-12-31	13F/A-2	YORK WTR	COM	987184108	435,001	-1,272	-0.29	20,271	9.92	0.0073
2021-02-11	2020-12-31	13F	YORK WTR	COM	987184108	435,001	-1,272		20,271		7,320.8077
2020-11-12	2020-09-30	13F	YORK WTR	COM	987184108	436,273	-7,520	-1.69	18,442	-13.35	0.0078
2020-08-13	2020-06-30	13F	YORK WTR	COM	987184108	443,793	-3,093	-0.69	21,284	9.58	0.0094
2020-05-14	2020-03-31	13F	YORK WTR	COM	987184108	446,886	286	0.06	19,424	-5.68	0.0101
2020-02-14	2019-12-31	13F	YORK WTR	COM	987184108	446,600	-3,771	-0.84	20,593	4.73	0.0075
2019-11-12	2019-09-30	13F	YORK WTR	COM	987184108	450,371	-1,996	-0.44	19,663	21.69	0.0076
2019-08-13	2019-06-30	13F	YORK WTR	COM	987184108	452,367	1,332	0.30	16,158	4.39	0.0063
2019-08-12	2019-03-31	13F/A-2	YORK WTR	COM	987184108	451,035	9,576	2.17	15,479	9.37	0.0062
2019-05-10	2019-03-31	13F	YORK WTR	COM	987184108	451,035	9,576		15,479
2019-02-26	2018-12-31	13F/A-1	YORK WTR	COM	987184108	441,459	2,535	0.58	14,153	6.07	0.0064
2019-02-13	2018-12-31	13F	YORK WTR	COM	987184108	441,459	2,535		14,153
2018-11-13	2018-09-30	13F	YORK WTR	COM	987184108	438,924	10,083	2.35	13,343	-2.16	0.0051
2018-08-10	2018-06-30	13F	YORK WTR	COM	987184108	428,841	9,484	2.26	13,637	4.90	0.0054
2018-05-11	2018-03-31	13F	YORK WTR	COM	987184108	419,357	11,670	2.86	13,000	-5.94	0.0054
2018-02-12	2017-12-31	13F	YORK WTR	COM	987184108	407,687	3,709	0.92	13,821	0.92	0.0057
2017-11-13	2017-09-30	13F	YORK WTR	COM	987184108	403,978	14,254	3.66	13,695	0.83	0.0060
2017-08-11	2017-06-30	13F	YORK WTR	COM	987184108	389,724	15,235	4.07	13,582	3.47	0.0063
2017-05-12	2017-03-31	13F	YORK WTR	COM	987184108	374,489	20,092	5.67	13,126	-3.04	0.0063
2017-02-09	2016-12-31	13F	YORK WTR	COM	987184108	354,397	12,008	3.51	13,538	33.31	0.0068
2016-11-10	2016-09-30	13F	YORK WTR	COM	987184108	342,389	17,365	5.34	10,155	-2.49	0.0055
2016-08-09	2016-06-30	13F	YORK WTR	COM	987184108	325,024	21,909	7.23	10,414	12.57	0.0060
2016-05-13	2016-03-31	13F	YORK WTR	COM	987184108	303,115	22,796	8.13	9,251	32.33	0.0055
2016-02-10	2015-12-31	13F	YORK WTR	COM	987184108	280,319	8,684	3.20	6,991	22.43	0.0044
2015-11-13	2015-09-30	13F	YORK WTR	COM	987184108	271,635	9,590	3.66	5,710	4.44	0.0037
2015-08-14	2015-06-30	13F	YORK WTR	COM	987184108	262,045	7,935	3.12	5,467	-11.39	0.0033
2015-05-14	2015-03-31	13F	YORK WTR	COM	987184108	254,110	3,308	1.32	6,170	6.00	0.0039
2015-02-06	2014-12-31	13F	YORK WTR	COM	987184108	250,802	9,348	3.87	5,821	20.54	0.0038
2014-11-13	2014-09-30	13F	YORK WTR	COM	987184108	241,454	2,300	0.96	4,829	-3.01	0.0034
2014-08-08	2014-06-30	13F	YORK WTR	COM	987184108	239,154	15,925	7.13	4,979	9.33	0.0035
2014-05-14	2014-03-31	13F	YORK WTR	COM	987184108	223,229	1,282	0.58	4,554	-1.96	0.0034
2014-02-12	2013-12-31	13F	YORK WTR	COM	987184108	221,947	3,219	1.47	4,645	5.81	0.0036
2013-11-13	2013-09-30	13F	YORK WTR	COM	987184108	218,728	1,927	0.89	4,390	6.40	0.0038
2013-08-15	2013-06-30	13F	YORK WTR	COM	987184108	216,801	216,801		4,126		0.0039

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.