WNDW · SolarWindow Technologies, Inc. · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“If we are unable to raise additional capital or generate positive cash flow, it is unlikely that we will be able to continue as a going concern. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.”View the 10-Q filed Jul 13, 2026
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 1 13F filers · Δ vs Mar 31, 2026Who Holds WNDW
Last 8 quarters through Jun 30, 2026Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026: 1 filers, like-for-like change 0.0%; actively managed books 0.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 0.0% | 0 | — |
| Unknown | 100.0% | 1 | 0.0% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Concentrated | 100.0% | 1 | 0.0% |
| Diversified active | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 100.0% | 1 | 0.0% |
| Medium turnover | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Long horizon | 100.0% | 1 | 0.0% |
| Medium horizon | 0.0% | 0 | — |
| Short horizon | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 100.0% | 1 | 0.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.0% | 0 | — |
| Unknown | 100.0% | 1 | 0.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| No private funds | 0.0% | 0 | — |
| Unknown | 100.0% | 1 | 0.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 100.0% | 1 | 0.0% |
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-06-30 13F.
Conviction and Crowding
1 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 100.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shareholder Targets
13F filers that own its peers but not WNDW, quarter ended Jun 30, 2026WNDW has no holder-overlap peers, so these filers hold the largest Utilities stocks: NEE, SO, CEG, DUK, AEP, SRE, ETR, D, XEL, VST, EXC, PCG, WEC, ED, PEG, CNP, NRG, ATO, AEE, EIX. 4,823 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | BlackRock, Inc. Holding company, Index-like | $108,268,662,524 20 held | NEE, SO, DUK |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like | $76,550,686,355 20 held | NEE, SO, DUK |
| 3 | STATE STREET CORP Bank, Index-like | $69,712,061,948 20 held | NEE, SO, DUK |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active | $52,220,185,816 20 held | NEE, CEG, SRE |
| 5 | GEODE CAPITAL MANAGEMENT, LLC Registered adviser, Index-like | $30,992,987,548 20 held | NEE, SO, DUK |
| 6 | JPMORGAN CHASE & CO Bank, Diversified active | $25,107,605,138 20 held | NEE, SO, ETR |
| 7 | MORGAN STANLEY Holding company, Index-like | $24,818,573,762 20 held | NEE, AEP, SRE |
| 8 | FMR LLC Holding company, Diversified active | $22,756,618,472 20 held | NEE, NRG, VST |
| 9 | Invesco Ltd. Adviser, Diversified active | $18,426,645,853 20 held | CEG, AEP, EXC |
| 10 | BANK OF AMERICA CORP /DE/ Bank, Diversified active | $18,395,848,276 20 held | NEE, XEL, ETR |
Quarterly Activity
New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Small Winch Advisory Services, LLC | $58 | 100.00% | 216 | Shares | 2026-08-06 |