% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for SPKKY in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | RHUMBLINE ADVISERS | 10,19810,198 | $60,982 | — | TRIM -19% |
| 2 | GAMMA Investing LLC | 6,8476,847 | $40,945 | — | TRIM -30% |
| 3 | Westside Investment Management, Inc. | 1,2551,255 | $7,563 | — | — |
| 4 | THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. | 500500 | $2,990 | — | NEW |
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| RHUMBLINE ADVISERS | 13K | 11K | 10K | 10K | 13K | 10K | $60,982 |
| GAMMA Investing LLC | 8K | 2K | 16K | 16K | 10K | 7K | $40,945 |
| Westside Investment Management, Inc. | — | — | — | 1K | 1K | 1K | $7,563 |
| THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. | — | — | — | — | — | 500 | $2,990 |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. | +500 | $2,980 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| GAMMA Investing LLC | −2,976 | $17,737 | TRIM |
| RHUMBLINE ADVISERS | −2,368 | $14,113 | TRIM |
| Hurley Capital, LLC | −200 | $1,192 | CLOSE |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 4 | 18,800 | — | $112,480 |
| 2025-Q4 | 4 | 23,844 | — | $155,814 |
| 2025-Q3 | 3 | 27,652 | — | $188,021 |
| 2025-Q2 | 2 | 26,397 | — | $192,696 |
| 2025-Q1 | 2 | 13,110 | — | $75,381 |
| 2024-Q4 | 3 | 25,617 | — | $210,059 |
| 2024-Q3 | 2 | 17,226 | — | $165,194 |
| 2024-Q2 | 2 | 15,201 | — | $195,178 |
| 2024-Q1 | 3 | 14,218 | — | $200,755 |
| 2023-Q4 | 3 | 14,140 | — | $231,185 |
| 2023-Q3 | 6 | 133,467 | — | $2M |
| 2023-Q2 | 7 | 139,106 | — | $2M |
| 2023-Q1 | 4 | 122,951 | — | $2M |
| 2022-Q4 | 3 | 122,914 | — | $2M |
| 2022-Q3 | 4 | 123,514 | — | $2M |
| 2022-Q2 | 5 | 124,125 | — | $2M |
| 2022-Q1 | 3 | 123,934 | — | $2M |
| 2021-Q4 | 4 | 1,477 | — | $22,000 |
| 2021-Q3 | 3 | 840 | — | $14,000 |
| 2021-Q2 | 3 | 840 | — | $14,000 |
| 2021-Q1 | 4 | 1,578,253 | — | $25M |
| 2020-Q4 | 4 | 1,540,115 | — | $26M |
| 2020-Q3 | 5 | 1,288,016 | — | $20M |
| 2020-Q2 | 6 | 1,368,179 | — | $20M |
| 2020-Q1 | 8 | 1,675,133 | — | $20M |
| 2019-Q4 | 10 | 1,638,417 | — | $24M |
| 2019-Q3 | 8 | 1,599,727 | — | $22M |
| 2019-Q2 | 8 | 1,449,695 | — | $19M |
| 2019-Q1 | 9 | 1,160,732 | — | $15M |
| 2018-Q4 | 7 | 1,240,828 | — | $17M |
| 2018-Q3 | 5 | 1,237,988 | — | $16M |
| 2018-Q2 | 7 | 1,177,605 | — | $15M |
| 2018-Q1 | 6 | 965,958 | — | $12M |
| 2017-Q4 | 6 | 869,784 | — | $11M |
| 2017-Q3 | 6 | 1,157,484 | — | $15M |
| 2017-Q2 | 9 | 1,151,727 | — | $16M |
| 2017-Q1 | 8 | 1,039,558 | — | $13M |
| 2016-Q4 | 8 | 749,038 | — | $9M |
| 2016-Q3 | 9 | 630,044 | — | $8M |
| 2016-Q2 | 10 | 895,096 | — | $11M |
| 2016-Q1 | 11 | 878,737 | — | $11M |
| 2015-Q4 | 13 | 818,417 | — | $9M |
| 2015-Q3 | 11 | 496,607 | — | $5M |
| 2015-Q2 | 13 | 699,084 | — | $7M |
| 2015-Q1 | 14 | 751,219 | — | $8M |
| 2014-Q4 | 11 | 696,367 | — | $8M |
| 2014-Q3 | 14 | 685,599 | — | $8M |
| 2014-Q2 | 1 | 85 | — | $1,000 |
