Who owns Silicom Ltd. (SILC)
Which tracked institutional funds hold SILC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SILC company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on SILC is one-sided between 2025-Q4 and 2026-Q1: 9 added or opened and 2 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SILC’s largest tracked holder by dollar value, SYSTEMATIC FINANCIAL MANAGEMENT LP, sizes it at 0.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SILC divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 31 tracked filers holding SILC, 15 increased or opened the position and 16 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SILC between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 3
- MARSHALL WACE, LLP$2M
- RENAISSANCE TECHNOLOGIES LLC$537K
- TWO SIGMA INVESTMENTS, LP$528K
Full exits 1
- Hudson Bay Capital Management LP$3M
Largest adds
- SYSTEMATIC FINANCIAL MANAGEMENT LP$3M
- FIRST WILSHIRE SECURITIES MANAGEMENT INC$2M
- NANO CAP NEW MILLENNIUM GROWTH FUND L P$1M
- HERALD INVESTMENT MANAGEMENT Ltd$795K
- MORGAN STANLEY$701K
- ACADIAN ASSET MANAGEMENT LLC$363K
Largest trims
- Yelin Lapidot Holdings Management Ltd.$1M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 537,459 | $11M | 25.8% | 2026-Q1 |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC added | 315,642 | $7M | 15.2% | 2026-Q1 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P added | 190,500 | $4M | 9.2% | 2026-Q1 |
| HERALD INVESTMENT MANAGEMENT Ltd trimmed | 123,300 | $3M | 5.9% | 2026-Q1 |
| MORGAN STANLEY added | 102,377 | $2M | 4.9% | 2026-Q1 |
| MARSHALL WACE, LLP added | 86,052 | $2M | 4.1% | 2026-Q1 |
| Yelin Lapidot Holdings Management Ltd. trimmed | 73,765 | $2M | 3.5% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC | 56,346 | $1M | 2.7% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 41,700 | $880K | 2.0% | 2026-Q1 |
| BlackRock, Inc. | 25,800 | $544K | 1.2% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 25,437 | $537K | 1.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 25,013 | $528K | 1.2% | 2026-Q1 |
| Analyst IMS Investment Management Services Ltd. | 20,680 | $436K | 1.0% | 2026-Q1 |
| Quadrature Capital Ltd added | 20,363 | $430K | 1.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 13,089 | $276K | 0.6% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 12,655 | $267K | 0.6% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP trimmed | 12,503 | $264K | 0.6% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. new | 12,420 | $262K | 0.6% | 2026-Q1 |
| XTX Topco Ltd new | 11,927 | $252K | 0.6% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 5,500 | $116K | 0.3% | 2026-Q1 |
| PNC FINANCIAL SERVICES GROUP, INC. | 5,300 | $112K | 0.3% | 2026-Q1 |
| BARCLAYS PLC | 3,670 | $77K | 0.2% | 2026-Q1 |
| OSAIC HOLDINGS, INC. added | 3,600 | $76K | 0.2% | 2026-Q1 |
| First Command Advisory Services, Inc. new | 239 | $5K | 0.0% | 2026-Q1 |
| MAI Capital Management new | 121 | $3K | 0.0% | 2026-Q1 |
| UBS Group AG | 109 | $2K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 84 | $2K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN | 26 | $549 | 0.0% | 2026-Q1 |
| Caitong International Asset Management Co., Ltd new | 1 | $21 | 0.0% | 2026-Q1 |
| SBI Securities Co., Ltd. | 1 | $21 | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA | 23 | — | 0.0% | 2026-Q1 |
| Hudson Bay Capital Management LP new | 224,905 | $3M | 7.5% | 2025-Q4 stale |
| Worth Venture Partners, LLC trimmed | 76,547 | $1M | 3.1% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP trimmed | 42,100 | $651K | 1.5% | 2025-Q2 stale |
| Acuitas Investments, LLC trimmed | 27,435 | $486K | 1.1% | 2025-Q3 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 24,583 | $436K | 1.0% | 2025-Q3 stale |
| CITADEL ADVISORS LLC added | 16,492 | $292K | 0.7% | 2025-Q3 stale |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 15,622 | $277K | 0.6% | 2025-Q3 stale |
| Walleye Capital LLC trimmed | 16,272 | $239K | 0.5% | 2025-Q4 stale |
| RBF Capital, LLC | 12,700 | $187K | 0.4% | 2025-Q4 stale |
| Invesco Ltd. trimmed | 11,366 | $176K | 0.4% | 2025-Q2 stale |
| CITIGROUP INC added | 2,058 | $30K | 0.1% | 2025-Q4 stale |
| GAMMA Investing LLC added | 387 | $26K | 0.1% | 2025-Q1 stale |
| TSFG, LLC trimmed | 1,050 | $15K | 0.0% | 2025-Q4 stale |
| BANK OF AMERICA CORP /DE/ added | 803 | $12K | 0.0% | 2025-Q4 stale |
| Tower Research Capital LLC (TRC) trimmed | 248 | $4K | 0.0% | 2025-Q3 stale |
| COLDSTREAM CAPITAL MANAGEMENT INC new | 124 | $2K | 0.0% | 2025-Q1 stale |
| BROWN BROTHERS HARRIMAN & CO new | 90 | $1K | 0.0% | 2025-Q4 stale |
| Farther Finance Advisors, LLC new | 17 | $250 | 0.0% | 2025-Q4 stale |
| Wellington Grp LLC new | 3 | $44 | 0.0% | 2025-Q4 stale |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.