H2O America (HTO)

H2O America on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as water supply.

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2.0M

Short interest

settlement 2026-09-30

3.9

Days to cover

-9.0 days vs prior

71.5%

Short share of volume

2026-10-09

1,121

Fails to deliver

settlement 2026-09-04

Tue 27 Oct

Next earnings

estimated date

Insider flow, 90 days

0 buys, 0 sells

As of 2026-10-09.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 34 in the chart. JSON

As of 30 September 2026, short interest in HTO is 2,012,314 shares, down 3,174,121 shares over the last month. Over the last 34 readings it ranged from 423,103 shares (15 October 2025) to 5,437,601 shares (30 June 2026). At the reported average volume of 519K shares a day that is 3.9 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-09-30	2,012,314	-61.0%	519,102	3.88
2026-09-15	5,158,832	-0.5%	400,948	12.87
2026-08-31	5,186,435	+6.6%	325,430	15.94
2026-08-14	4,865,882	-4.3%	346,211	14.05
2026-07-31	5,082,968	-4.1%	501,789	10.13
2026-07-15	5,300,989	-2.5%	522,269	10.15
2026-06-30	5,437,601	+8.5%	536,970	10.13
2026-06-15	5,012,523	+4.1%	392,609	12.77
2026-05-29	4,813,221	+0.6%	471,696	10.20
2026-05-15	4,783,931	-1.3%	459,581	10.41
2026-04-30	4,845,216	+1.5%	703,026	6.89
2026-04-15	4,772,643	-10.6%	575,650	8.29
2026-03-31	5,338,212	+3.8%	611,201	8.73
2026-03-13	5,143,556	+210.3%	979,415	5.25
2026-02-27	1,657,368	+11.5%	333,793	4.97
2026-02-13	1,486,212	+6.3%	241,499	6.15
2026-01-30	1,398,626	-15.4%	305,041	4.59
2026-01-15	1,652,534	+11.9%	351,171	4.71
2025-12-31	1,477,056	+23.1%	381,883	3.87
2025-12-15	1,200,349	+24.3%	438,392	2.74
2025-11-28	966,012	+119.1%	459,740	2.10
2025-11-14	440,893	-19.9%	247,349	1.78
2025-10-31	550,712	+30.2%	366,277	1.50
2025-10-15	423,103	-5.1%	260,639	1.62

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of HTO volume is 71.5%, down 7.5 points over the last five sessions. Over the last 30 readings it ranged from 43.8% (1 October 2026) to 85.6% (23 September 2026). The latest reading is in line with the 30-session average of 70.4%, on 182K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-10-09	130K	182K	71.5%	0
2026-10-08	116K	222K	52.5%	0
2026-10-07	112K	164K	68.3%	7,020
2026-10-06	102K	158K	64.8%	7
2026-10-05	120K	206K	58.3%	0
2026-10-02	105K	134K	78.9%	0
2026-10-01	84K	191K	43.8%	0
2026-09-30	92K	122K	75.9%	330
2026-09-29	77K	109K	70.9%	91
2026-09-28	55K	84K	66.0%	0
2026-09-25	66K	82K	80.9%	0
2026-09-24	118K	151K	78.0%	0
2026-09-23	148K	173K	85.6%	0
2026-09-22	118K	149K	79.4%	422
2026-09-21	60K	93K	63.9%	29
2026-09-18	73K	94K	77.5%	0
2026-09-17	63K	87K	72.1%	0
2026-09-16	63K	81K	78.2%	184
2026-09-15	64K	89K	71.6%	0
2026-09-14	79K	102K	76.6%	0
2026-09-11	90K	128K	70.4%	0
2026-09-10	103K	148K	69.5%	0
2026-09-09	80K	103K	77.4%	0
2026-09-08	91K	114K	79.5%	0
2026-09-04	94K	127K	74.2%	0
2026-09-03	86K	148K	58.2%	0
2026-09-02	119K	197K	60.6%	0
2026-09-01	91K	121K	75.1%	0
2026-08-31	76K	106K	71.2%	0
2026-08-28	55K	90K	60.9%	0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 4 September 2026, the fails-to-deliver balance in HTO is 1,121 shares, up 481 shares over the last settlement date. Over the last 30 readings it ranged from 4 shares (3 August 2026) to 21,882 shares (2 July 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-09-04	1,121	$64.56	$72K
2026-09-01	640	$63.37	$41K
2026-08-31	11,166	$63.55	$710K
2026-08-25	49	$64.49	$3K
2026-08-14	1,495	$63.29	$95K
2026-08-12	206	$62.28	$13K
2026-08-04	11	$61.08	$672
2026-08-03	4	$61.33	$245
2026-07-30	541	$63.76	$34K
2026-07-22	136	$64.02	$9K
2026-07-14	1,940	$62.47	$121K
2026-07-08	70	$61.77	$4K
2026-07-06	119	$62.42	$7K
2026-07-02	21,882	$60.74	$1.3M
2026-07-01	56	$60.77	$3K
2026-06-26	54	$59.82	$3K
2026-06-15	66	$57.06	$4K
2026-06-09	40	$56.19	$2K
2026-06-02	655	$56.96	$37K
2026-05-26	251	$58.13	$15K
2026-05-18	750	$55.24	$41K
2026-05-12	657	$57.39	$38K
2026-05-11	152	$57.97	$9K
2026-05-05	170	$57.32	$10K
2026-04-30	72	$57.67	$4K
2026-04-15	1,260	$58.10	$73K
2026-04-10	40	$59.86	$2K
2026-04-02	5	$58.44	$292
2026-03-17	1,358	$58.68	$80K
2026-03-16	310	$58.93	$18K

Insider trades

SEC Form 4, newest first, 50 of 60 shown. JSON

No open-market insider trades were reported for HTO in the last 90 days. The most recent filings are listed below. Latest filing: Mattern Megan (CAO, PAO and Controller) on 2026-07-30.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-07-30	Mattern Megan	CAO, PAO and Controller	Tax withholding	1K	$61.97	$72K	14K
2026-07-07	ATLAS Infrastructure Partners (UK) Ltd.	10% owner	Buy	3K	$62.03	$173K	4.6M
2026-07-01	Kelly Ann P	CFO and Treasurer	Tax withholding	88	$60.74	$5K	10K
2026-07-01	Walters Andrew F	Chief Executive Officer	Disposition	374	$60.74	$23K	26K
2026-07-01	ATLAS Infrastructure Partners (UK) Ltd.	10% owner	Buy	2K	$60.76	$130K	4.6M
2026-07-01	ATLAS Infrastructure Partners (UK) Ltd.	10% owner	Sell	2K	$60.73	$102K	4.6M
2026-06-05	Walters Andrew F	Chief Executive Officer	Gift	4K	$0.00	$0	27K
2026-05-29	ATLAS Infrastructure Partners (UK) Ltd.	TenPercentOwner	Buy	31K	$57.62	$1.8M	4.6M
2026-05-29	ATLAS Infrastructure Partners (UK) Ltd.	TenPercentOwner	Sell	1K	$57.52	$83K	4.6M
2026-05-13	More Daniel B.	Director	Grant	2K	$0.00	$0	2K
2026-05-13	KLEIN REBECCA A	Director	Grant	2K	$0.00	$0	9K
2026-05-13	Rowe Nick Orlando	Director	Grant	2K	$0.00	$0	2K
2026-05-13	Heather Hunt	Director	Grant	2K	$0.00	$0	11K
2026-05-13	WALLACE CAROL P	Director	Grant	2K	$0.00	$0	11K
2026-05-13	HANLEY MARY ANN	Director	Grant	2K	$0.00	$0	12K
2026-05-13	KRUGER DENISE L	Director	Grant	2K	$0.00	$0	7K
2026-05-13	Guardino Carl	Director	Grant	2K	$0.00	$0	9K
2026-04-10	ATLAS Infrastructure Partners (UK) Ltd.	10% owner	Buy	50K	$59.06	$3.0M	4.6M
2026-04-10	GIP ATLAS Holdings Ltd	10% owner	Buy	50K	$59.06	$3.0M	4.6M
2026-03-01	Rowe Nick Orlando	Director	Grant	505	$0.00	$0	505
2026-02-27	Mattern Megan	CAO, PAO and Controller	Grant	2K	$0.00	$0	15K
2026-02-27	Johnson A Kristen	Chief Administrative Officer	Tax withholding	470	$53.79	$25K	15K
2026-02-27	Johnson A Kristen	Chief Administrative Officer	Grant	1K	$0.00	$0	15K
2026-02-27	Johnson A Kristen	Chief Administrative Officer	Grant	1K	$0.00	$0	14K
2026-02-27	Hauk Bruce A	President and COO	Tax withholding	378	$53.79	$20K	17K
2026-02-27	Hauk Bruce A	President and COO	Grant	2K	$0.00	$0	17K
2026-02-27	Hauk Bruce A	President and COO	Grant	3K	$0.00	$0	15K
2026-02-27	Kelly Ann P	CFO and Treasurer	Grant	2K	$0.00	$0	10K
2026-02-27	Walters Andrew F	Chief Executive Officer	Tax withholding	605	$53.79	$33K	30K
2026-02-27	Walters Andrew F	Chief Executive Officer	Grant	2K	$0.00	$0	31K
2026-02-27	Walters Andrew F	Chief Executive Officer	Grant	6K	$0.00	$0	29K
2026-02-27	Brown Willie D. Jr.	VP & Gen Counsel	Tax withholding	521	$53.79	$28K	14K
2026-02-27	Brown Willie D. Jr.	VP & Gen Counsel	Grant	1K	$0.00	$0	14K
2026-02-27	Brown Willie D. Jr.	VP & Gen Counsel	Grant	1K	$0.00	$0	13K
2026-01-03	Walters Andrew F	Chief Executive Officer	Tax withholding	216	$49.86	$11K	23K
2026-01-03	Johnson A Kristen	Chief Administrative Officer	Tax withholding	160	$49.86	$8K	12K
2026-01-03	Hauk Bruce A	President and COO	Tax withholding	152	$49.86	$8K	13K
2026-01-03	Brown Willie D. Jr.	VP & Gen Counsel	Tax withholding	178	$49.86	$9K	11K
2026-01-02	Kelly Ann P	CFO and Treasurer	Tax withholding	200	$49.25	$10K	8K
2026-01-02	Walters Andrew F	Chief Executive Officer	Tax withholding	682	$49.25	$34K	24K
2026-01-02	Johnson A Kristen	Chief Administrative Officer	Tax withholding	514	$49.25	$25K	13K
2026-01-02	Hauk Bruce A	President and COO	Tax withholding	873	$49.25	$43K	13K
2026-01-02	Brown Willie D. Jr.	VP & Gen Counsel	Tax withholding	565	$49.25	$28K	12K
2025-12-01	Kelly Ann P	CFO and Treasurer	Tax withholding	581	$46.86	$27K	9K
2025-11-13	Walters Andrew F	Chief Executive Officer	Sell	2K	$47.22	$99K	24K
2025-08-22	Hauk Bruce A	President and COO	Tax withholding	116	$50.98	$6K	14K
2025-07-30	Mattern Megan	CAO, PAO and Controller	Grant	10K	$0.00	$0	13K
2025-07-30	Mattern Megan	CAO, PAO and Controller	Grant	2K	$0.00	$0	2K
2025-07-01	Johnson A Kristen	Chief Administrative Officer	Grant	2K	$0.00	$0	13K
2025-07-01	Walters Andrew F	Chief Executive Officer	Grant	4K	$0.00	$0	26K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Planned sales (Form 144)

Newest first. JSON

1 Form 144 notice on file for HTO worth $99K at the prices reported; 0 in the last 90 days worth $0. Latest: Andrew F. Walters filed on 2025-11-13 to sell 2,100 shares ($99K) from 2025-11-13.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2025-11-13	Andrew F. WaltersCEO, Director	2K	$99K	0.006%	2025-11-13	J.P. Morgan Securities LLC

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

4 holders report 5% or more of HTO in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 15.8% of the class (6,612,895 shares), filed 2026-07-28 for an event on 2026-06-30.

Filed	Form	Holder	Shares	Of class	Event
2026-09-22	13G/Ano. 3	GIP Atlas Holdings Limitedinvestment adviser	4.7M	11.2%	2026-09-21
2026-09-22	13G/Ano. 3	ATLAS Infrastructure Partners (UK) Ltd.investment adviser	4.7M	11.2%	2026-09-21
2026-07-28	13G/Ano. 9	BlackRock, Inc.parent holding company	6.6M	15.8%	2026-06-30
2026-03-27	13G/Ano. 6	The Vanguard Groupinvestment adviser	0	0.0%	2026-03-13
2026-03-06	13G	Future Fund Board of Guardiansother entity	2.6M	6.2%	2026-03-03
2026-02-17	13G/Ano. 2	AMUNDIparent holding company	1.7M	4.8%	2025-12-31
2026-02-17	13G/Ano. 2	AMUNDI ASSET MANAGEMENTparent holding company	1.7M	4.8%	2025-12-31

13F holders

Tracked managers holding HTO at their latest 13F. JSON

8 of the 30 tracked managers held HTO at their latest 13F, $159.5M in total at quarter-end prices. Soros Fund Management is the largest at $76.2M (0.9% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 4 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
Soros Fund Management	2026-06-30	1.3M	$76.2M	0.94%	+26K
Two Sigma Investments	2026-06-30	806K	$49.0M	0.04%	+556K
AQR Capital Management	2026-06-30	216K	$13.1M	0.00%	+44K
D. E. Shaw & Co.	2026-06-30	136K	$8.2M	0.00%	+96K
Point72 Asset Management	2026-06-30	114K	$6.9M	0.01%	-257K
Renaissance Technologies	2026-06-30	53K	$3.2M	0.00%	-105K
Citadel Advisors	2026-06-30	26K	$1.6M	0.00%	-390K
Millennium Management	2026-06-30	18K	$1.1M	0.00%	-326K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

Financials

SEC XBRL, as filed. JSON

In Q1 FY 2026 (quarter ended 2026-03-31) H2O America reported revenue of $179.3M, up 8.8% from the same quarter a year earlier, and net income of $19.0M (0.49 diluted EPS). In FY 2025 it generated $244.8M of operating cash flow and spent $58.6M on dividends. As of 2026-03-31, cash was $153.0M against $1.87B of debt.

Cash: $153.0M
Debt: $1.87B
Equity: $1.83B
Total assets: $5.35B
Shares outstanding: 41,840,247

Quarterly, last 8 quarters

Quarter	Period end	Revenue	Net income	Margin	Diluted EPS
Q1 FY 2026	2026-03-31	$179.3M	$19.0M	10.6%	0.49
Q4 FY 2025derived	2025-12-31	$199.4M	$16.2M	8.1%	n/a
Q3 FY 2025	2025-09-30	$243.5M	$45.1M	18.5%	1.27
Q2 FY 2025	2025-06-30	$197.8M	$24.7M	12.5%	0.71
Q1 FY 2025	2025-03-31	$164.9M	$16.6M	10.0%	0.49
Q4 FY 2024derived	2024-12-31	$196.5M	$22.9M	11.7%	n/a
Q3 FY 2024	2024-09-30	$216.7M	$38.7M	17.8%	1.17
Q2 FY 2024	2024-06-30	$173.1M	$20.7M	12.0%	0.64

Fiscal years, with buybacks and dividends

Fiscal year	Ends	Revenue	Net income	Operating cash flow	Capex	Buybacks	Dividends
FY 2025	2025-12-31	$805.6M	$102.6M	$244.8M	n/a	n/a	$58.6M
FY 2024	2024-12-31	$736.3M	$94.0M	$195.5M	n/a	n/a	$52.1M
FY 2023	2023-12-31	$678.2M	$85.0M	$190.8M	n/a	n/a	$47.9M
FY 2022	2022-12-31	$586.9M	$73.8M	$166.2M	n/a	n/a	$43.6M
FY 2021	2021-12-31	$559.6M	$60.5M	$130.0M	n/a	n/a	$40.1M

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-03-31; shares outstanding as of 2026-04-23 from the cover page.

What this page is

H2O America in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows H2O America (HTO), SEC CIK 766829, listed on Nasdaq, classified by the SEC as water supply. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest: FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
Daily short volume: FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-09.JSON and CSV
Fails to deliver: SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-04.JSON and CSV
Planned sales: SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2025-11-13.JSON and CSV
Large holders: SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-09-22.JSON and CSV
13F holders: SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Financials: SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-03-31.JSON and CSV
Earnings dates: SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-07-27.JSON and CSV
Insider trades: SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-07-30.JSON and CSV
Company record: EDGAR filing index for CIK 766829Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits: 10 requests a minute without a key, 30 with a free key from a free account.

How to read it

Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as water supply

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Datasets

Frequently Asked Questions

How much of HTO is sold short?

2,012,314 shares were held short at the 2026-09-30 settlement, 3.9 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.

What is HTO's daily short volume?

On 2026-10-09, 129,892 of the 181,792 HTO shares reported to FINRA were sold short, 71.5% of the day's reported volume. Short volume is a flow for one day, not a position.

Does HTO have fails to deliver?

The SEC's latest file shows 1,121 HTO shares failed to deliver at settlement 2026-09-04. Fails are reported per settlement date and published twice a month with a lag.

Are HTO insiders buying or selling?

No open-market insider trades were reported for HTO in the last 90 days. The most recent filings are listed below. Latest filing: Mattern Megan (CAO, PAO and Controller) on 2026-07-30.

Have HTO insiders filed to sell?

1 Form 144 notice on file for HTO worth $99K at the prices reported; 0 in the last 90 days worth $0. Latest: Andrew F. Walters filed on 2025-11-13 to sell 2,100 shares ($99K) from 2025-11-13.

Who owns 5% or more of HTO?

What did HTO report last quarter?

Which tracked 13F managers own HTO?

8 of the 30 tracked 13F managers held HTO shares at their latest filing, $159.5M in all. The largest: George Soros's Soros Fund Management (1.3M shares, $76.2M), Two Sigma Investments (806K shares, $49.0M), Cliff Asness's AQR Capital Management (216K shares, $13.1M), D. E. Shaw & Co. (136K shares, $8.2M), Steve Cohen's Point72 Asset Management (114K shares, $6.9M), Renaissance Technologies (53K shares, $3.2M). The table above lists all 8.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.