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Solid Power SLDP

US equityMarket cap rank #3685Auto Parts Solid State Battery

$2.40 +$0.05 (+2.13%)

Pre-market · Oct 8, 8:20 am ET · After hours $2.41 +0.42%

Open$2.32

Prev close$2.35

Day range$2.28 – $2.42

Volume2.43M

Market cap$547.63M

P/E (TTM)–

Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership41.5%-0.36 pts vs. prior quarter

Institutions holding222-2 vs. prior quarter

Insider trades (recent)19 buys / 31 sellsNet selling

Short interest12.19% of floatDays to cover 10.4 · as of 15 Sep 2026

Short-sale volume share26.7%5-day average of daily volume

Short-sale volume as % of daily volume

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$602.1K (7 inflow days, 13 outflow days).

Net flow by order size, last 20 sessions

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 21.2% of shares outstanding.

Largest holders

BlackRock7.50%
Bayerische Motoren Werke Aktiengesellschaft4.60%
Vanguard Capital Management, LLC4.28%
State Street Global Advisors2.54%
Geode Capital Management, LLC2.26%
Riverstone Holdings LLC2.04%
Dimensional Fund Advisors1.38%
D. E. Shaw & Co., L.P.1.31%

By investor type

Mutual Fund26.79%
Public Company7.43%
Individual/Insider4.25%
Hedge Fund3.87%
VC/PE Fund2.11%
Government Pension Fund0.57%
Private Company0.45%
Insurance Company0.22%

Reported short interest has risen from 11.16% to 12.19% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

Holder	Type	Period	Share change	New stake
John Van Scoter	Individual/Insider	2026/Q3	+198,655	0.6%
Nuveen Asset Management LLC	Insurance Company	2026/Q3	+489,665	0.2%
BlackRock	Mutual Fund	2026/Q3	+3,379,567	7.5%
State Street Global Advisors	Mutual Fund	2026/Q3	+1,544,134	2.5%
Citadel Advisors LLC	Hedge Fund	2026/Q3	+972,539	1.1%
Citigroup Inc.	Public Company	2026/Q3	+790,794	0.4%
UBS Asset Management	Mutual Fund	2026/Q3	+713,967	0.8%
Barclays PLC	Public Company	2026/Q3	+605,615	0.5%
Geode Capital Management, LLC	Mutual Fund	2026/Q3	+599,886	2.3%
VarCov Co.	Mutual Fund	2026/Q3	+437,615	0.2%
Invesco Capital Management LLC	Mutual Fund	2026/Q3	+430,920	1.2%
Leap Investments LP	Mutual Fund	2026/Q3	+299,600	0.1%
Northern Trust Global Investments	Mutual Fund	2026/Q3	+262,518	0.8%
Vanguard Capital Management, LLC	Mutual Fund	2026/Q3	+254,348	4.3%
XTX Markets Limited	Private Company	2026/Q3	+253,670	0.2%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
29 Sep 2026	Linda Heller	Chief Financial Officer	Sale to Issuer	-72,310	$2.27	520,294
29 Sep 2026	John Van Scoter	Chief Executive Officer	Sale to Issuer	-154,512	$2.27	1,398,229
29 Sep 2026	Joshua Buettner-Garrett	Chief Technology Officer	Sale to Issuer	-33,824	$2.27	716,854
29 Jun 2026	Linda Heller	Chief Financial Officer	Sale to Issuer	-72,310	$2.60	444,673
29 Jun 2026	John Van Scoter	Chief Executive Officer	Sale to Issuer	-154,512	$2.60	1,199,574
29 Jun 2026	Joshua Buettner-Garrett	Chief Technology Officer	Sale to Issuer	-33,824	$2.60	607,534
19 May 2026	Susan Kreh	Independent Director	Other Acquisition	+44,133	–	150,448
19 May 2026	Erik Anderson	Independent Director	Other Acquisition	+44,133	–	44,133
19 May 2026	Aleksandra Miziolek	Independent Director	Other Acquisition	+44,133	–	44,133
19 May 2026	Lesa Roe	Independent Director	Other Acquisition	+44,133	–	44,133
19 May 2026	Lesa Roe	Independent Director	Automatic Disposition	-39,207	$2.66	199,842
19 May 2026	John Stephens	Independent Chairperson & Lead Independent Director	Other Acquisition	+44,133	–	44,133
19 May 2026	MaryAnn Wright	Independent Director	Other Acquisition	+44,133	–	44,133
19 May 2026	Steven Goldberg	Independent Director	Other Acquisition	+44,133	–	44,133
19 May 2026	Kaled Awada	Independent Director	Other Acquisition	+44,133	–	260,396
11 May 2026	Joshua Buettner-Garrett	Chief Technology Officer	Sale to Issuer	-5,519	$3.15	629,888
10 May 2026	Linda Heller	Chief Financial Officer	Sale to Issuer	-136,122	$3.08	369,053
10 May 2026	John Van Scoter	Chief Executive Officer	Sale to Issuer	-308,010	$3.08	1,000,920
10 May 2026	Joshua Buettner-Garrett	Chief Technology Officer	Sale to Issuer	-58,082	$3.08	622,792
31 Mar 2026	Linda Heller	Chief Financial Officer	Other Acquisition	+380,348	–	1,930,582

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report date	Shares short	% of float	Days to cover
15 Sep 2026	27,816,344	12.2%	10.4
31 Aug 2026	27,836,691	12.2%	11.8
14 Aug 2026	26,799,877	11.7%	6.9
31 Jul 2026	24,984,114	11.1%	6.4
15 Jul 2026	25,044,360	11.1%	6.5
30 Jun 2026	25,114,954	11.2%	5.0

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