Antero Midstream (AM)

Antero Midstream 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 NYSE, classified by the SEC as natural gas transmission.

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13.6M

Short interest

settlement 2026-10-15

5.4

Days to cover

+1.2 days vs prior

33.1%

Short share of volume

2026-10-28

1,110

Fails to deliver

settlement 2026-08-13

Wed 10 Feb

Next earnings

estimated date

-$459K

Insider flow, 90 days

0 buys, 2 sells

As of 2026-10-28.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 15 October 2026, short interest in AM is 13,633,169 shares, up 1,552,868 shares over the last month. Over the last 48 readings it ranged from 8,439,060 shares (15 September 2025) to 14,938,820 shares (28 February 2025). At the reported average volume of 2.5M shares a day that is 5.4 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-10-15	13,633,169	+10.9%	2,528,054	5.39
2026-09-30	12,290,151	+1.7%	2,927,738	4.20
2026-09-15	12,080,301	+9.0%	2,120,015	5.70
2026-08-31	11,084,340	+5.6%	2,449,966	4.52
2026-08-14	10,495,878	+5.9%	2,331,320	4.50
2026-07-31	9,912,620	-0.1%	2,105,460	4.71
2026-07-15	9,919,810	-5.4%	2,078,023	4.77
2026-06-30	10,490,170	-7.3%	3,160,875	3.32
2026-06-15	11,310,079	-2.7%	1,897,050	5.96
2026-05-29	11,620,984	+10.9%	2,309,683	5.03
2026-05-15	10,478,968	-8.9%	2,504,839	4.18
2026-04-30	11,505,697	+5.5%	2,842,662	4.05
2026-04-15	10,901,756	+3.7%	2,380,667	4.58
2026-03-31	10,511,423	+7.0%	3,020,503	3.48
2026-03-13	9,826,586	-8.8%	2,433,251	4.04
2026-02-27	10,778,534	-7.0%	3,367,865	3.20
2026-02-13	11,591,872	-3.3%	3,722,478	3.11
2026-01-30	11,990,722	+19.7%	2,527,048	4.74
2026-01-15	10,017,730	+4.2%	2,788,679	3.59
2025-12-31	9,617,068	+4.7%	2,672,677	3.60
2025-12-15	9,182,709	-9.3%	2,435,312	3.77
2025-11-28	10,130,030	+6.2%	2,201,436	4.60
2025-11-14	9,537,448	+4.5%	2,650,896	3.60
2025-10-31	9,123,075	+6.0%	2,188,268	4.17
2025-10-15	8,605,200	+1.9%	1,865,490	4.61
2025-09-30	8,445,734	+0.1%	2,525,903	3.34
2025-09-15	8,439,060	-2.3%	2,484,218	3.40
2025-08-29	8,638,761	-8.9%	2,265,834	3.81
2025-08-15	9,485,803	+2.0%	2,713,770	3.50
2025-07-31	9,300,861	-2.8%	3,126,895	2.97
2025-07-15	9,571,879	+0.7%	2,560,273	3.74
2025-06-30	9,506,412	-5.9%	3,228,718	2.94
2025-06-13	10,105,822	-8.0%	2,380,886	4.24
2025-05-30	10,988,009	+1.6%	2,067,647	5.31
2025-05-15	10,813,170	+0.6%	2,964,036	3.65
2025-04-30	10,747,967	+1.6%	2,402,493	4.47
2025-04-15	10,583,471	+18.4%	4,162,889	2.54
2025-03-31	8,938,792	-36.0%	5,245,696	1.70
2025-03-14	13,977,234	-6.4%	4,182,763	3.34
2025-02-28	14,938,820	+20.2%	3,457,279	4.32
2025-02-14	12,425,200	-2.7%	2,963,612	4.19
2025-01-31	12,769,822	+1.5%	3,056,089	4.18
2025-01-15	12,585,350	+0.8%	2,246,030	5.60
2024-12-31	12,481,326	-5.7%	2,859,385	4.37
2024-12-13	13,235,779	+0.4%	2,540,284	5.21
2024-11-29	13,178,958	+10.2%	2,752,151	4.79
2024-11-15	11,956,187	-0.8%	2,780,734	4.30
2024-10-31	12,046,078	-4.7%	2,743,701	4.39

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 28 October 2026, the short share of AM volume is 33.1%, down 16.3 points over the last five sessions. Over the last 30 readings it ranged from 33.1% (28 October 2026) to 76.5% (8 October 2026). The latest reading sits at the bottom of that range. The latest reading is 19.4 points below the 30-session average of 52.5%, on 750K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-10-28	249K	750K	33.1%	405
2026-10-27	385K	701K	55.0%	3,233
2026-10-26	316K	869K	36.3%	101
2026-10-23	401K	723K	55.4%	1
2026-10-22	297K	611K	48.6%	125
2026-10-21	345K	697K	49.5%	6,935
2026-10-20	193K	491K	39.4%	101
2026-10-19	314K	664K	47.3%	1,593
2026-10-16	539K	1.5M	36.5%	5,781
2026-10-15	629K	1.2M	52.3%	3,925
2026-10-14	374K	545K	68.6%	3,986
2026-10-13	370K	587K	63.1%	1,018
2026-10-12	299K	444K	67.2%	4,282
2026-10-09	528K	910K	58.0%	0
2026-10-08	564K	737K	76.5%	1,135
2026-10-07	526K	924K	56.9%	763
2026-10-06	507K	876K	57.9%	2,509
2026-10-05	304K	571K	53.2%	130
2026-10-02	459K	1.2M	38.8%	1,511
2026-10-01	332K	669K	49.6%	3,267
2026-09-30	518K	827K	62.7%	2,900
2026-09-29	326K	679K	48.0%	171
2026-09-28	301K	629K	47.9%	22
2026-09-25	385K	756K	50.9%	81
2026-09-24	292K	505K	57.8%	118
2026-09-23	289K	568K	51.0%	98
2026-09-22	473K	829K	57.1%	311
2026-09-21	306K	649K	47.2%	297
2026-09-18	368K	626K	58.9%	81
2026-09-17	595K	1.2M	50.4%	367

Fails to deliver

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

As of 13 August 2026, the fails-to-deliver balance in AM is 1,110 shares, down 3,841 shares over the last settlement date. Over the last 30 readings it ranged from 6 shares (20 March 2026) to 179,406 shares (24 March 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-08-13	1,110	$22.24	$25K
2026-08-11	4,951	$21.94	$109K
2026-07-17	100	$22.85	$2K
2026-07-01	11,717	$22.75	$267K
2026-06-30	509	$22.80	$12K
2026-06-22	43	$21.71	$934
2026-06-12	47,465	$21.36	$1.0M
2026-06-09	38	$21.33	$811
2026-06-01	159	$20.96	$3K
2026-05-15	2,912	$21.74	$63K
2026-05-13	18,305	$21.36	$391K
2026-05-07	30,182	$21.16	$639K
2026-04-16	290	$21.26	$6K
2026-03-24	179,406	$22.96	$4.1M
2026-03-23	1,354	$22.65	$31K
2026-03-20	6	$23.07	$138
2026-03-17	552	$22.88	$13K
2026-03-13	22,050	$22.85	$504K
2026-03-09	35,416	$22.97	$814K
2026-02-27	48	$22.36	$1K
2026-02-26	3,307	$22.28	$74K
2026-02-23	1,221	$21.63	$26K
2026-02-19	254	$20.97	$5K
2026-02-12	4,503	$20.44	$92K
2026-01-23	25,496	$18.77	$479K
2026-01-22	22,541	$18.59	$419K
2026-01-21	23,102	$18.34	$424K
2026-01-15	133,900	$17.78	$2.4M
2025-12-29	4,547	$17.73	$81K
2025-11-26	4,979	$17.60	$88K

Insider trades

SEC Form 4, newest first. JSON

Insiders at AM reported 2 open-market sells worth $459K in the last 90 days and no open-market buys. Latest filing: KEYTE DAVID H (Director) on 2026-10-10.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-10-10	KEYTE DAVID H	Director	Grant	3K	$0.00	$0	121K
2026-10-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	70K
2026-10-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	160K
2026-10-10	DEA PETER A	Director	Grant	2K	$0.00	$0	71K
2026-10-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	36K
2026-10-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	109K
2026-10-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	15K
2026-10-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	84K
2026-08-06	KLIMLEY BROOKS J	Director	Sell	5K	$21.27	$106K	68K
2026-08-04	Pearce Sheri	See Remarks	Sell	16K	$22.01	$352K	84K
2026-07-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	158K
2026-07-10	DEA PETER A	Director	Grant	2K	$0.00	$0	69K
2026-07-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	34K
2026-07-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	107K
2026-07-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	13K
2026-07-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	82K
2026-07-10	KEYTE DAVID H	Director	Grant	3K	$0.00	$0	118K
2026-07-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	73K
2026-05-04	Schultz Yvette K	See Remarks	Sell	69K	$21.90	$1.5M	581K
2026-05-04	Kennedy Michael N.	See Remarks	Sell	100K	$21.92	$2.2M	1.5M
2026-04-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	156K
2026-04-10	DEA PETER A	Director	Grant	2K	$0.00	$0	67K
2026-04-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	32K
2026-04-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	11K
2026-04-10	KEYTE DAVID H	Director	Grant	3K	$0.00	$0	115K
2026-04-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	81K
2026-04-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	105K
2026-04-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	71K
2026-03-12	KLIMLEY BROOKS J	Director	Sell	5K	$23.16	$116K	70K
2026-03-10	Pearce Sheri	See Remarks	Sell	14K	$22.76	$319K	100K
2026-03-09	Schultz Yvette K	See Remarks	Sell	25K	$22.81	$570K	650K
2026-03-07	Pearce Sheri	See Remarks	Tax withholding	25K	$22.97	$580K	114K
2026-03-07	Pearce Sheri	See Remarks	Grant	33K	$0.00	$0	139K
2026-03-07	Kennedy Michael N.	See Remarks	Gift	15K	$0.00	$0	1.6M
2026-03-07	Kennedy Michael N.	See Remarks	Tax withholding	109K	$22.97	$2.5M	1.6M
2026-03-07	Kennedy Michael N.	See Remarks	Grant	261K	$0.00	$0	1.7M
2026-03-07	Krueger Brendan E.	See Remarks	Tax withholding	57K	$22.97	$1.3M	675K
2026-03-07	Krueger Brendan E.	See Remarks	Grant	98K	$0.00	$0	731K
2026-03-07	Schultz Yvette K	See Remarks	Tax withholding	66K	$22.97	$1.5M	675K
2026-03-07	Schultz Yvette K	See Remarks	Grant	98K	$0.00	$0	741K
2026-03-07	Agnew Justin J.	See Remarks	Tax withholding	15K	$22.97	$356K	209K
2026-03-07	Agnew Justin J.	See Remarks	Grant	33K	$0.00	$0	224K
2026-02-24	Schultz Yvette K	See Remarks	Tax withholding	55K	$22.12	$1.2M	643K
2026-02-24	Schultz Yvette K	See Remarks	Grant	124K	$0.00	$0	698K
2026-02-24	Krueger Brendan E.	See Remarks	Tax withholding	44K	$22.12	$970K	634K
2026-02-24	Krueger Brendan E.	See Remarks	Grant	99K	$0.00	$0	677K
2026-02-24	Kennedy Michael N.	See Remarks	Tax withholding	89K	$22.12	$2.0M	1.5M
2026-02-24	Kennedy Michael N.	See Remarks	Grant	203K	$0.00	$0	1.6M
2026-01-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	103K
2026-01-10	DEA PETER A	Director	Grant	2K	$0.00	$0	65K
2026-01-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	31K
2026-01-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	79K
2026-01-10	KEYTE DAVID H	Director	Grant	4K	$0.00	$0	112K
2026-01-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	75K
2026-01-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	154K
2026-01-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	10K
2025-12-16	KLIMLEY BROOKS J	Director	Sell	5K	$17.59	$88K	73K
2025-12-12	Kennedy Michael N.	See Remarks	Gift	15K	$0.00	$0	1.3M
2025-10-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	152K
2025-10-10	DEA PETER A	Director	Grant	2K	$0.00	$0	63K
2025-10-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	29K
2025-10-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	101K
2025-10-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	8K
2025-10-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	77K
2025-10-10	KEYTE DAVID H	Director	Grant	3K	$0.00	$0	108K
2025-10-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	78K
2025-08-20	Pearce Sheri	See Remarks	Sell	39K	$17.51	$686K	106K
2025-07-10	DEA PETER A	Director	Grant	2K	$0.00	$0	61K
2025-07-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	27K
2025-07-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	99K
2025-07-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	6K
2025-07-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	75K
2025-07-10	KEYTE DAVID H	Director	Grant	2K	$0.00	$0	105K
2025-07-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	76K
2025-07-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	150K
2025-05-28	KLIMLEY BROOKS J	Director	Sell	5K	$18.88	$94K	74K
2025-04-15	Pearce Sheri	See Remarks	Tax withholding	12K	$16.73	$205K	146K
2025-04-15	RADY PAUL M	See Remarks	Tax withholding	149K	$16.73	$2.5M	3.1M
2025-04-15	Schultz Yvette K	See Remarks	Tax withholding	28K	$16.73	$461K	574K
2025-04-15	Kennedy Michael N.	See Remarks	Tax withholding	44K	$16.73	$741K	1.4M
2025-04-15	Krueger Brendan E.	See Remarks	Tax withholding	26K	$16.73	$432K	578K
2025-04-10	Keenan W Howard JR	Director	Grant	2K	$0.00	$0	148K
2025-04-10	Chisholm Nancy	Director	Grant	2K	$0.00	$0	25K
2025-04-10	DEA PETER A	Director	Grant	2K	$0.00	$0	59K
2025-04-10	Munoz Jeffrey S.	Director	Grant	2K	$0.00	$0	4K
2025-04-10	MOLLENKOPF JOHN C	Director	Grant	2K	$0.00	$0	97K
2025-04-10	KEYTE DAVID H	Director	Grant	2K	$0.00	$0	103K
2025-04-10	KLIMLEY BROOKS J	Director	Grant	2K	$0.00	$0	79K
2025-04-10	MCARDLE JANINE J	Director	Grant	2K	$0.00	$0	73K
2025-03-07	RADY PAUL M	Chief Executive Officer	Tax withholding	185K	$16.46	$3.0M	3.2M
2025-03-07	RADY PAUL M	Chief Executive Officer	Grant	460K	$0.00	$0	3.4M
2025-03-07	Schultz Yvette K	See Remarks	Grant	121K	$0.00	$0	650K
2025-03-07	Schultz Yvette K	See Remarks	Tax withholding	49K	$16.46	$799K	601K
2025-03-07	Kennedy Michael N.	See Remarks	Grant	198K	$0.00	$0	1.5M
2025-03-07	Kennedy Michael N.	See Remarks	Tax withholding	80K	$16.46	$1.3M	1.4M
2025-03-07	Krueger Brendan E.	See Remarks	Tax withholding	39K	$16.46	$639K	604K
2025-03-07	Krueger Brendan E.	See Remarks	Grant	121K	$0.00	$0	643K
2025-03-07	Pearce Sheri	See Remarks	Tax withholding	18K	$16.46	$304K	158K
2025-03-07	Pearce Sheri	See Remarks	Grant	46K	$0.00	$0	176K
2025-02-27	Krueger Brendan E.	See Remarks	Grant	89K	price not stated in the filing	not stated	561K

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

6 Form 144 notices on file for AM worth $4.6M at the prices reported; 1 in the last 90 days worth $106K. Latest: BROOKS J KLIMLEY filed on 2026-08-06 to sell 5,000 shares ($106K) from 2026-08-06.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2026-08-06	BROOKS J KLIMLEYDirector	5K	$106K	0.001%	2026-08-06	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-05-04	Yvette SchultzOfficer	69K	$1.5M	0.015%	2026-05-04	UBS Financial Services Inc
2026-05-04	Kennedy Michael N.Officer, Director	100K	$2.2M	0.021%	2026-05-04	UBS Financial Services Inc.
2026-03-12	BROOKS J KLIMLEYDirector	5K	$116K	0.001%	2026-03-12	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-09	Yvette SchultzOfficer	25K	$570K	0.005%	2026-03-09	UBS Financial Services Inc
2025-12-16	BROOKS J KLIMLEYDirector	5K	$88K	0.001%	2025-12-16	Morgan Stanley Smith Barney LLC Executive Financial Services

Large holders (13D and 13G)

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

No holder on file reports 5% or more of AM in its latest filing.

Filed	Form	Holder	Shares	Of class	Event
2026-03-26	13G/Ano. 5	The Vanguard Groupinvestment adviser	0	0.0%	2026-03-13
2025-11-06	13G/Ano. 8	Invesco Ltd.parent holding company, investment adviser	22.7M	4.7%	2025-09-30

13F holders

Tracked managers holding AM at their latest 13F. JSON

6 of the 30 tracked managers held AM at their latest 13F, $37.0M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $14.7M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 0 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
D. E. Shaw & Co.	2026-06-30	645K	$14.7M	0.01%	+230K
AQR Capital Management	2026-06-30	420K	$9.6M	0.00%	+227K
Two Sigma Investments	2026-06-30	193K	$4.4M	0.00%	+80K
Bridgewater Associates	2026-06-30	179K	$4.1M	0.02%	+27K
Millennium Management	2026-06-30	178K	$4.1M	0.00%	new
Citadel Advisors	2026-06-30	10K	$228K	0.00%	+1K

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 Q2 FY 2026 (quarter ended 2026-06-30) Antero Midstream reported revenue of $327.2M, up 7.1% from the same quarter a year earlier (0.24 diluted EPS). In FY 2025 it generated $932.5M of operating cash flow and spent $135.0M on buybacks and $439.0M on dividends.

Debt: $3.57B
Equity: $1.95B
Total assets: $6.36B
Shares outstanding: 474,674,000

Quarterly, last 8 quarters

Quarter	Period end	Revenue	Net income	Margin	Diluted EPS
Q2 FY 2026	2026-06-30	$327.2M	n/a	n/a	0.24
Q1 FY 2026	2026-03-31	$314.2M	n/a	n/a	0.25
Q4 FY 2025derived	2025-12-31	$297.0M	n/a	n/a	n/a
Q3 FY 2025	2025-09-30	$294.8M	n/a	n/a	0.24
Q2 FY 2025	2025-06-30	$305.5M	n/a	n/a	0.26
Q1 FY 2025	2025-03-31	$291.1M	n/a	n/a	0.25
Q4 FY 2024derived	2024-12-31	$287.5M	n/a	n/a	n/a
Q3 FY 2024	2024-09-30	$269.9M	n/a	n/a	0.21

Fiscal years, with buybacks and dividends

Fiscal year	Ends	Revenue	Net income	Operating cash flow	Capex	Buybacks	Dividends
FY 2025	2025-12-31	$1.19B	$418.0M	$932.5M	n/a	$135.0M	$439.0M
FY 2024	2024-12-31	$1.11B	$401.0M	$844.0M	$70.0M	$28.7M	$437.6M
FY 2023	2023-12-31	$1.04B	$372.0M	$779.1M	$266K	n/a	$434.8M
FY 2022	2022-12-31	$920.0M	$326.0M	$699.6M	$216.7M	n/a	$432.8M
FY 2021	2021-12-31	$898.2M	$332.0M	$709.8M	n/a	n/a	$471.2M

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 2026-06-30; shares outstanding as of 2026-07-24 from the cover page.

What this page is

Antero Midstream 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 Antero Midstream (AM), SEC CIK 1623925, listed on NYSE, classified by the SEC as natural gas transmission. 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 2026-10-15.JSON and CSV
Daily short volume: FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
Fails to deliver: SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-08-13.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 2026-08-06.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 2026-03-26.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 2026-06-30.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 2026-10-28.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 2026-10-10.JSON and CSV
Company record: EDGAR filing index for CIK 1623925Ticker, 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 natural gas transmission

Other company pages

Datasets

Frequently Asked Questions

How much of AM is sold short?

13,633,169 shares were held short at the 2026-10-15 settlement, 5.4 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 AM's daily short volume?

On 2026-10-28, 248,559 of the 749,826 AM shares reported to FINRA were sold short, 33.1% of the day's reported volume. Short volume is a flow for one day, not a position.

Does AM have fails to deliver?

The SEC's latest file shows 1,110 AM shares failed to deliver at settlement 2026-08-13. Fails are reported per settlement date and published twice a month with a lag.

Are AM insiders buying or selling?

Insiders at AM reported 2 open-market sells worth $459K in the last 90 days and no open-market buys. Latest filing: KEYTE DAVID H (Director) on 2026-10-10.

Have AM insiders filed to sell?

6 Form 144 notices on file for AM worth $4.6M at the prices reported; 1 in the last 90 days worth $106K. Latest: BROOKS J KLIMLEY filed on 2026-08-06 to sell 5,000 shares ($106K) from 2026-08-06.

Who owns 5% or more of AM?

No holder on file reports 5% or more of AM in its latest filing.

What did AM report last quarter?

Which tracked 13F managers own AM?

6 of the 30 tracked 13F managers held AM shares at their latest filing, $37.0M in all. The largest: D. E. Shaw & Co. (645K shares, $14.7M), Cliff Asness's AQR Capital Management (420K shares, $9.6M), Two Sigma Investments (193K shares, $4.4M), Ray Dalio's Bridgewater Associates (179K shares, $4.1M), Izzy Englander's Millennium Management (178K shares, $4.1M), Ken Griffin's Citadel Advisors (10K shares, $228K).

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