Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Ideal Power Inc.

CIK 0001507957IPWR· quarter ending 2026-06-30

Shares outstanding

16,434,655

as of 2026-08-11 · 10-Q cover page, filed 2026-08-13

Held by 13F filers

6,362,254

38.7% of shares outstanding

Holders

+17 vs 2026-03-31 · 22 new, 5 exited

Value

$36.4M

shares +51.5% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-13, as of 2026-08-11)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	IPWR · NASDAQ	16,434,655	6,362,254	38.7%	46	451622203

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	451622203	COM NEW	46	6,362,254	16,434,655	38.7%	$36.4M	2 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (46 of 46 · 451622203)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	AWM Investment Company, Inc.	1,346,244	8.19%	$7.2M	+149,395 (+12.5%)
2	AIGH Capital Management LLC	894,731	5.44%	$4.8M	-286,965 (-24.3%)
3	GOLDMAN SACHS GROUP INC	660,303	4.02%	$3.5M	+423,054 (+178.3%)
4	VANGUARD CAPITAL MANAGEMENT LLC	608,959	3.71%	$3.3M	+294,521 (+93.7%)
5	STIFEL FINANCIAL CORP	468,906	2.85%	$2.5M	+387,454 (+475.7%)
6	Bleichroeder LP	400,000	2.43%	$2.1M	+100,000 (+33.3%)
7	Baird Financial Group, Inc.	326,068	1.98%	$1.7M	NEW
8	MARSHALL WACE, LLP	318,217	1.94%	$1.7M	NEW
9	JANE STREET GROUP, LLC	268,807	1.64%	$1.4M	+244,752 (+1017.5%)
10	BlackRock, Inc.	136,171	0.83%	$730K	+14,644 (+12.0%)
11	GEODE CAPITAL MANAGEMENT, LLC	120,159	0.73%	$644K	+20,914 (+21.1%)
12	RENAISSANCE TECHNOLOGIES LLC	100,754	0.61%	$540K	NEW
13	Polar Asset Management Partners Inc.	70,700	0.43%	$379K	NEW
14	VANGUARD FIDUCIARY TRUST CO	64,105	0.39%	$344K	+21,592 (+50.8%)
15	BANK OF AMERICA CORP /DE/	60,739	0.37%	$326K	NEW
16	Diversify Advisory Services, LLC	59,877	0.36%	$235K	NEW
17	DIVERSIFY WEALTH MANAGEMENT, LLC	59,877	0.36%	$235K	NEW
18	MORGAN STANLEY	58,396	0.36%	$313K	+37,336 (+177.3%)
19	XTX Topco Ltd	42,090	0.26%	$226K	NEW
20	Jump Financial, LLC	41,000	0.25%	$220K	NEW
21	STATE STREET CORP	40,747	0.25%	$218K	+18,900 (+86.5%)
22	NORTHERN TRUST CORP	37,918	0.23%	$203K	+11,220 (+42.0%)
23	Walleye Capital LLC	24,377	0.15%	$131K	NEW
24	Resurgent Financial Advisors LLC	24,040	0.15%	$129K	+4,000 (+20.0%)
25	CITADEL ADVISORS LLC	20,787	0.13%	$111K	NEW
26	BAILARD, INC.	20,365	0.12%	$109K	—
27	Virtu Financial LLC	16,705	0.10%	$90K	NEW
28	Jefferies Financial Group Inc.	15,001	0.09%	$80K	NEW
29	AlphaCore Capital LLC	14,234	0.09%	$76K	—
30	Invesco Ltd.	14,146	0.09%	$76K	NEW
31	BNP PARIBAS FINANCIAL MARKETS	6,362	0.04%	$34K	NEW
32	CITIGROUP INC	6,096	0.04%	$33K	NEW
33	JPMORGAN CHASE & CO	3,839	0.02%	$20K	NEW
34	UBS Group AG	3,661	0.02%	$20K	-18,748 (-83.7%)
35	Vanguard Global Advisers, LLC	2,138	0.01%	$11K	—
36	Tower Research Capital LLC (TRC)	1,435	0.01%	$8K	+1,219 (+564.4%)
37	JONES FINANCIAL COMPANIES LLLP	1,199	0.01%	$6K	+892 (+290.6%)
38	IFP Advisors, Inc	1,000	0.01%	$5K	NEW
39	BARCLAYS PLC	884	0.01%	$5K	NEW
40	ROYAL BANK OF CANADA	500	0.00%	$3K	—
41	WELLS FARGO & COMPANY/MN	300	0.00%	$2K	—
42	OSAIC HOLDINGS, INC.	300	0.00%	$2K	—
43	Avion Wealth	64	0.00%	$0	NEW
44	SIMPLEX TRADING, LLC	41	0.00%	$219	NEW
45	Coppell Advisory Solutions LLC	11	0.00%	$2.5M	NEW
46	SBI Securities Co., Ltd.	1	0.00%	$5	-30 (-96.8%)

Exited since 2026-03-31 (5 filers; largest 5 shown)

Alyeska Investment Group, L.P.	−385,571
Cable Car Capital, LP	−50,000
SUSQUEHANNA INTERNATIONAL GROUP, LLP	−11,764
FNY Investment Advisers, LLC	−3,402
Westside Investment Management, Inc.	−386

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
LYTTON LAURENCE W	SCHEDULE 13G/A	2026-08-13	2026-06-30	959,856	7.5%
AIGH Capital Management LLC	SCHEDULE 13G/A	2026-04-27	2026-03-31	1,181,696	9.8%
Orin Hirschman	SCHEDULE 13G/A	2026-04-27	2026-03-31	1,181,696	9.8%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.