Core & Main (CNM)

Core & Main 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 wholesale-durable goods, nec.

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12.5M

Short interest

settlement 2026-09-30

4.8

Days to cover

+1.7 days vs prior

51.4%

Short share of volume

2026-10-09

336

Fails to deliver

settlement 2026-09-14

Mon 6 Nov

Last earnings

reported (8-K Item 2.02)

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, 48 in the chart. JSON

As of 30 September 2026, short interest in CNM is 12,470,102 shares, up 1,215,310 shares over the last month. Over the last 48 readings it ranged from 7,642,360 shares (13 March 2026) to 15,288,000 shares (14 March 2025). At the reported average volume of 2.6M shares a day that is 4.8 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-09-30	12,470,102	+22.6%	2,614,225	4.77
2026-09-15	10,170,572	-9.6%	3,294,423	3.09
2026-08-31	11,254,792	+4.5%	1,922,840	5.85
2026-08-14	10,765,013	-4.5%	1,784,615	6.03
2026-07-31	11,268,016	+8.9%	1,854,948	6.07
2026-07-15	10,350,272	+9.5%	2,346,287	4.41
2026-06-30	9,449,427	+8.4%	3,230,709	2.92
2026-06-15	8,718,881	-5.9%	2,834,608	3.08
2026-05-29	9,268,108	+2.5%	1,911,580	4.85
2026-05-15	9,038,934	+14.4%	2,101,710	4.30
2026-04-30	7,897,485	+0.3%	3,165,581	2.49
2026-04-15	7,875,594	-2.9%	2,390,154	3.30
2026-03-31	8,111,514	+6.1%	3,406,044	2.38
2026-03-13	7,642,360	-2.5%	1,819,836	4.20
2026-02-27	7,834,166	-5.2%	2,070,325	3.78
2026-02-13	8,262,512	-2.8%	2,169,781	3.81
2026-01-30	8,498,258	-0.9%	2,165,855	3.92
2026-01-15	8,574,267	-2.8%	1,956,084	4.38
2025-12-31	8,818,454	-8.9%	1,679,277	5.25
2025-12-15	9,681,572	-19.0%	3,591,293	2.70
2025-11-28	11,955,224	-1.4%	2,860,637	4.18
2025-11-14	12,121,485	-10.9%	1,932,851	6.27
2025-10-31	13,611,805	+13.1%	2,080,329	6.54
2025-10-15	12,034,902	-6.8%	2,334,647	5.15

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of CNM volume is 51.4%, down 21.1 points over the last five sessions. Over the last 30 readings it ranged from 45.5% (11 September 2026) to 86.6% (21 September 2026). The latest reading is 14.1 points below the 30-session average of 65.5%, on 416K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-10-09	214K	416K	51.4%	0
2026-10-08	280K	539K	51.9%	0
2026-10-07	637K	781K	81.6%	112
2026-10-06	646K	1.4M	47.3%	2,200
2026-10-05	783K	1.0M	76.8%	0
2026-10-02	375K	517K	72.4%	2,673
2026-10-01	504K	818K	61.5%	393
2026-09-30	361K	494K	73.1%	0
2026-09-29	373K	555K	67.1%	55
2026-09-28	370K	526K	70.3%	140
2026-09-25	493K	677K	72.9%	500
2026-09-24	697K	898K	77.6%	386
2026-09-23	630K	1.0M	61.4%	1
2026-09-22	819K	1.0M	78.0%	14,594
2026-09-21	685K	791K	86.6%	11
2026-09-18	409K	570K	71.8%	0
2026-09-17	944K	1.3M	72.9%	9
2026-09-16	956K	1.7M	56.7%	7
2026-09-15	629K	979K	64.2%	0
2026-09-14	887K	1.4M	62.5%	0
2026-09-11	873K	1.9M	45.5%	7
2026-09-10	1.1M	2.2M	46.9%	0
2026-09-09	1.8M	2.2M	81.6%	3
2026-09-08	692K	1.2M	56.2%	3,922
2026-09-04	324K	509K	63.7%	615
2026-09-03	583K	921K	63.3%	38
2026-09-02	648K	1.3M	49.6%	405
2026-09-01	590K	888K	66.4%	0
2026-08-31	332K	582K	57.0%	1,877
2026-08-28	536K	701K	76.5%	1,762

Fails to deliver

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

As of 14 September 2026, the fails-to-deliver balance in CNM is 336 shares, down 91,068 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (12 January 2026) to 242,042 shares (13 May 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-09-14	336	$40.62	$14K
2026-09-09	91,404	$44.06	$4.0M
2026-07-23	20,091	$43.75	$879K
2026-07-15	190	$45.22	$9K
2026-07-01	106	$48.25	$5K
2026-06-22	123	$48.58	$6K
2026-06-15	567	$48.33	$27K
2026-06-02	49	$49.08	$2K
2026-05-29	94	$49.17	$5K
2026-05-19	1,601	$46.13	$74K
2026-05-18	1	$46.77	$47
2026-05-13	242,042	$47.50	$11.5M
2026-04-20	235	$50.79	$12K
2026-03-17	28	$47.90	$1K
2026-03-10	38,724	$49.96	$1.9M
2026-03-09	39,606	$49.82	$2.0M
2026-02-27	58	$55.12	$3K
2026-02-17	44	$58.18	$3K
2026-01-20	100	$58.50	$6K
2026-01-12	1	$56.63	$57
2026-01-06	452	$55.39	$25K
2026-01-02	92	$51.97	$5K
2025-12-16	9	$55.43	$499
2025-12-15	57	$56.09	$3K
2025-12-12	717	$56.79	$41K
2025-12-11	1,131	$55.20	$62K
2025-12-04	102	$50.00	$5K
2025-11-25	19	$44.90	$853
2025-11-24	82	$45.65	$4K
2025-11-20	84	$45.37	$4K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

No open-market insider trades were reported for CNM in the last 90 days. The most recent filings are listed below. Latest filing: Harper Carla D (Senior VP, Human Resources) on 2026-08-04.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-08-04	Harper Carla D	Senior VP, Human Resources	Tax withholding	242	$46.32	$11K	13K
2026-07-22	HUEBERT MICHAEL G.	President	Tax withholding	1K	$43.75	$57K	24K
2026-07-06	Hope James D	Director	Buy	2K	$46.01	$95K	12K
2026-06-23	Kimbrough Orvin T	Director	Grant	3K	$0.00	$0	17K
2026-06-23	Gipson Dennis G	Director	Grant	3K	$0.00	$0	17K
2026-06-23	Hope James D	Director	Grant	3K	$0.00	$0	10K
2026-06-23	MAZZARELLA KATHLEEN M	Director	Grant	3K	$0.00	$0	17K
2026-06-23	Hardwick M Susan	Director	Grant	3K	$0.00	$0	3K
2026-06-23	NEWMAN MARGARET	Director	Grant	3K	$0.00	$0	17K
2026-06-23	Castellano James G	Director	Grant	3K	$0.00	$0	7K
2026-06-23	Buck Robert M	Director	Grant	3K	$0.00	$0	16K
2026-06-23	Amirthalingam Bhavani	Director	Grant	3K	$0.00	$0	18K
2026-06-22	Harper Carla D	Senior VP, Human Resources	Tax withholding	568	$47.25	$27K	13K
2026-04-17	Bradbury Robyn L	Chief Financial Officer	Sell	3K	$52.84	$177K	13K
2026-04-17	Bradbury Robyn L	Chief Financial Officer	Sell	2K	$51.94	$86K	16K
2026-04-17	Bradbury Robyn L	Chief Financial Officer	Conversion	5K	$0.00	$0	18K
2026-04-07	Hope James D	Director	Buy	2K	$50.70	$100K	7K
2026-04-01	Hardwick M Susan	Director	Grant	580	$0.00	$0	580
2026-03-12	Giles Jeffrey D	EVP, Corporate Development	Grant	3K	$0.00	$0	10K
2026-03-12	Witkowski Mark R	Chief Executive Officer	Grant	18K	$0.00	$0	51K
2026-03-12	Cowles Bradford A	President	Grant	7K	$0.00	$0	25K
2026-03-12	Stephens John Weldon	Chief Accounting Officer	Grant	936	$0.00	$0	17K
2026-03-12	HUEBERT MICHAEL G.	President	Grant	11K	$0.00	$0	25K
2026-03-12	Harper Carla D	Senior VP, Human Resources	Grant	2K	$0.00	$0	14K
2026-03-12	Bradbury Robyn L	Chief Financial Officer	Grant	5K	$0.00	$0	13K
2026-03-11	Whittenburg Mark G	General Counsel and Secretary	Tax withholding	331	$49.16	$16K	9K
2026-03-11	Witkowski Mark R	Chief Executive Officer	Tax withholding	2K	$49.16	$83K	33K
2026-03-11	Cowles Bradford A	President	Tax withholding	607	$49.16	$30K	18K
2026-03-11	Stephens John Weldon	Chief Accounting Officer	Tax withholding	107	$49.16	$5K	16K
2026-03-11	HUEBERT MICHAEL G.	President	Tax withholding	447	$49.16	$22K	15K
2026-03-11	Harper Carla D	Senior VP, Human Resources	Tax withholding	89	$49.16	$4K	11K
2026-03-11	Bradbury Robyn L	Chief Financial Officer	Tax withholding	404	$49.16	$20K	8K
2026-03-10	Whittenburg Mark G	General Counsel and Secretary	Tax withholding	557	$49.38	$28K	9K
2026-03-10	Harper Carla D	Senior VP, Human Resources	Tax withholding	189	$49.38	$9K	12K
2026-03-10	Stephens John Weldon	Chief Accounting Officer	Tax withholding	198	$49.38	$10K	17K
2026-03-10	Cowles Bradford A	President	Tax withholding	741	$49.38	$37K	19K
2026-03-10	Witkowski Mark R	Chief Executive Officer	Tax withholding	937	$49.38	$46K	34K
2026-03-10	LeClair Stephen O	Executive Chair	Tax withholding	3K	$49.38	$152K	66K
2026-03-10	Bradbury Robyn L	Chief Financial Officer	Tax withholding	205	$49.38	$10K	8K
2026-03-09	Whittenburg Mark G	General Counsel and Secretary	Tax withholding	278	$49.96	$14K	9K
2026-03-09	Harper Carla D	Senior VP, Human Resources	Tax withholding	77	$49.96	$4K	12K
2026-03-09	Stephens John Weldon	Chief Accounting Officer	Tax withholding	94	$49.96	$5K	17K
2026-03-09	HUEBERT MICHAEL G.	President	Tax withholding	350	$49.96	$17K	15K
2026-03-09	Cowles Bradford A	President	Tax withholding	435	$49.96	$22K	20K
2026-03-09	Witkowski Mark R	Chief Executive Officer	Tax withholding	478	$49.96	$24K	35K
2026-03-09	LeClair Stephen O	Executive Chair	Tax withholding	2K	$49.96	$76K	69K
2026-03-09	Bradbury Robyn L	Chief Financial Officer	Tax withholding	270	$49.96	$13K	8K
2026-01-26	Giles Jeffrey D	EVP, Corporate Development	Grant	4K	$0.00	$0	7K
2025-09-12	Stephens John Weldon	Chief Accounting Officer	Option exercise	13K	$20.81	$265K	17K
2025-09-03	Harper Carla D	Senior VP, Human Resources	Grant	2K	$0.00	$0	12K

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

7 Form 144 notices on file for CNM worth $32.1M at the prices reported; 0 in the last 90 days worth $0. Latest: Whittenburg Mark G filed on 2026-06-30 to sell 49,065 shares ($2.4M) from 2026-06-30.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2026-06-30	Whittenburg Mark GFormer Officer	49K	$2.4M	0.026%	2026-06-30	Fidelity Brokerage Services LLC
2026-05-29	Whittenburg Mark GFormer Officer	19K	$931K	0.010%	2026-05-29	Fidelity Brokerage Services LLC
2026-05-27	Whittenburg Mark GFormer Officer	22K	$1.1M	0.012%	2026-05-27	Fidelity Brokerage Services LLC
2026-04-16	LeClair Stephen OFormer Director	133K	$7.0M	0.071%	2026-04-16	Fidelity Brokerage Services LLC
2026-04-15	LeClair Stephen OFormer Director	315K	$16.8M	0.168%	2026-04-15	Fidelity Brokerage Services LLC
2026-01-13	Schaller John RFormer Officer	20K	$1.1M	0.010%	2026-01-13	Fidelity Brokerage Services LLC
2026-01-05	Schaller John RFormer Officer	53K	$2.9M	0.028%	2026-01-05	Fidelity Brokerage Services LLC

Large holders (13D and 13G)

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

3 holders report 5% or more of CNM in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 10.1% of the class (18,990,291 shares), filed 2026-04-07 for an event on 2026-03-31.

Filed	Form	Holder	Shares	Of class	Event
2026-05-14	13G	Capital World Investorsinvestment adviser	11.6M	6.2%	2026-03-31
2026-05-11	13G/Ano. 3	Morgan Stanleyparent holding company, corporation	5.1M	2.7%	2026-03-31
2026-05-11	13G/Ano. 3	Morgan Stanley Investment Management Inc.investment adviser, corporation	3.3M	1.8%	2026-03-31
2026-04-29	13G	Vanguard Capital Managementinvestment adviser	9.9M	5.3%	2026-03-31
2026-04-07	13G/Ano. 3	BlackRock, Inc.parent holding company	19.0M	10.1%	2026-03-31
2026-03-26	13G/Ano. 11	The Vanguard Groupinvestment adviser	0	0.0%	2026-03-13
2026-02-17	13G/Ano. 6	Select Equity Group, L.P.investment adviser	7.8M	4.1%	2025-12-31
2026-02-17	13G/Ano. 6	George S. Loeningparent holding company, individual	7.8M	4.1%	2025-12-31

13F holders

Tracked managers holding CNM at their latest 13F. JSON

9 of the 30 tracked managers held CNM at their latest 13F, $525.7M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $220.9M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 7 added shares and 2 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
D. E. Shaw & Co.	2026-06-30	4.6M	$220.9M	0.11%	+735K
Point72 Asset Management	2026-06-30	3.1M	$148.6M	0.16%	+238K
Renaissance Technologies	2026-06-30	1.4M	$68.0M	0.09%	+594K
Citadel Advisors	2026-06-30	986K	$47.6M	0.01%	+918K
AQR Capital Management	2026-06-30	419K	$20.0M	0.01%	-312K
Soros Fund Management	2026-06-30	236K	$11.4M	0.14%	+4K
Millennium Management	2026-06-30	130K	$6.3M	0.00%	-461K
Two Sigma Investments	2026-06-30	34K	$1.6M	0.00%	new
Bridgewater Associates	2026-06-30	29K	$1.4M	0.01%	new

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 2026-08-02) Core & Main reported revenue of $2.15B, up 2.5% from the same quarter a year earlier, and net income of $144.0M (0.77 diluted EPS). In FY 2026 it generated $650.0M of operating cash flow and spent $155.0M on buybacks. As of 2026-08-02, cash was $312.0M against $2.43B of debt.

Cash: $312.0M
Debt: $2.43B
Equity: $2.03B
Total assets: $6.71B

Quarterly, last 8 quarters

Quarter	Period end	Revenue	Net income	Margin	Diluted EPS
Q2 FY 2026	2026-08-02	$2.15B	$144.0M	6.7%	0.77
Q1 FY 2026	2026-05-03	$1.91B	$108.0M	5.7%	0.57
Q4 FY 2025derived	2026-02-01	$1.58B	$70.0M	4.4%	n/a
Q3 FY 2025	2025-11-02	$2.06B	$137.0M	6.6%	0.72
Q2 FY 2025	2025-08-03	$2.09B	$134.0M	6.4%	0.70
Q1 FY 2025	2025-05-04	$1.91B	$100.0M	5.2%	0.52
Q4 FY 2024derived	2025-02-02	$1.70B	$64.0M	3.8%	n/a
Q3 FY 2024	2024-10-27	$2.04B	$133.0M	6.5%	0.69

Fiscal years, with buybacks and dividends

Fiscal year	Ends	Revenue	Net income	Operating cash flow	Capex	Buybacks	Dividends
FY 2026	2026-02-01	$7.65B	$441.0M	$650.0M	$46.0M	$155.0M	n/a
FY 2025	2025-02-02	$7.44B	$411.0M	$621.0M	$35.0M	$176.0M	n/a
FY 2024	2024-01-28	$6.70B	$371.0M	$1.07B	$39.0M	$1.34B	n/a
FY 2023	2023-01-29	$6.65B	$366.0M	$401.0M	$25.0M	$0	n/a
FY 2022	2022-01-30	$5.00B	$166.0M	-$31.0M	$20.0M	$0	n/a

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 2026-08-02.

What this page is

Core & Main 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 Core & Main (CNM), SEC CIK 1856525, listed on NYSE, classified by the SEC as wholesale-durable goods, nec. 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 2026-09-14.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 2026-06-30.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 2026-05-14.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 2026-08-02.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 2023-11-06.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 2026-08-04.JSON and CSV
Company record: EDGAR filing index for CIK 1856525Ticker, 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 wholesale-durable goods, nec

GNLNGreenlane Holdings

Datasets

Frequently Asked Questions

How much of CNM is sold short?

12,470,102 shares were held short at the 2026-09-30 settlement, 4.8 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 CNM's daily short volume?

On 2026-10-09, 213,815 of the 416,346 CNM shares reported to FINRA were sold short, 51.4% of the day's reported volume. Short volume is a flow for one day, not a position.

Does CNM have fails to deliver?

The SEC's latest file shows 336 CNM shares failed to deliver at settlement 2026-09-14. Fails are reported per settlement date and published twice a month with a lag.

Are CNM insiders buying or selling?

No open-market insider trades were reported for CNM in the last 90 days. The most recent filings are listed below. Latest filing: Harper Carla D (Senior VP, Human Resources) on 2026-08-04.

Have CNM insiders filed to sell?

7 Form 144 notices on file for CNM worth $32.1M at the prices reported; 0 in the last 90 days worth $0. Latest: Whittenburg Mark G filed on 2026-06-30 to sell 49,065 shares ($2.4M) from 2026-06-30.

Who owns 5% or more of CNM?

What did CNM report last quarter?

Which tracked 13F managers own CNM?

9 of the 30 tracked 13F managers held CNM shares at their latest filing, $525.7M in all. The largest: D. E. Shaw & Co. (4.6M shares, $220.9M), Steve Cohen's Point72 Asset Management (3.1M shares, $148.6M), Renaissance Technologies (1.4M shares, $68.0M), Ken Griffin's Citadel Advisors (986K shares, $47.6M), Cliff Asness's AQR Capital Management (419K shares, $20.0M), George Soros's Soros Fund Management (236K shares, $11.4M). The table above lists all 9.

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

Core & Main (CNM)

Short interest

Daily short volume

Fails to deliver

Insider trades

Planned sales (Form 144)

Large holders (13D and 13G)

13F holders

Financials

Quarterly, last 8 quarters

Fiscal years, with buybacks and dividends

Core & Main in the regulatory record

Source and updates

How to read it

Other companies the SEC classifies as wholesale-durable goods, nec

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