# UNITED GUARDIAN INC COM

UNITED GUARDIAN INC COM is a security (CUSIP 910571108) tracked across SEC portfolio filings. 28 institutional managers reported $6.4M on Form 13F as of 2026-06-30; 3 registered fund positions totaling $479K via N-PORT as of 2026-04-30.

## Summary

- Issuer: UNITED GUARDIAN INC
- Class: COM
- CUSIP: 910571108
- Asset category: EC
- 13F holders: 28
- 13F value: $6.4M
- 13F period: 2026-06-30
- N-PORT fund positions: 3
- N-PORT value: $479K
- N-PORT report: 2026-04-30

## Top institutional holders (Form 13F)

_Showing 15 of 28 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $1.2M | 175,766 |
| [GAMCO INVESTORS, INC. ET AL](https://search.stillhousedata.com/firm/104950) | GREENWICH, CT | $1.1M | 164,388 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $926K | 150,396 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $454K | 68,538 |
| [Teton Advisors, Inc.](https://search.stillhousedata.com/firm/105963) | Rye, NY | $432K | 53,961 |
| [Rodgers Brothers Inc.](https://search.stillhousedata.com/firm/16197) | Harmony, PA | $426K | 59,600 |
| [PARTHENON LLC](https://search.stillhousedata.com/firm/107794) | LOUISVILLE, KY | $362K | 50,636 |
| [Teton Advisors, LLC](https://search.stillhousedata.com/firm/105963) | GREENWICH, CT | $360K | 53,761 |
| [GABELLI FUNDS LLC](https://search.stillhousedata.com/firm/104949) | RYE, NY | $255K | 38,000 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $243K | 36,607 |
| [UNITED CAPITAL FINANCIAL ADVISERS, LLC](https://search.stillhousedata.com/firm/134600) | NEWPORT BEACH, CA | $134K | 20,070 |
| [FIRST MANHATTAN CO. LLC.](https://search.stillhousedata.com/firm/325281) | New York, NY | $108K | 16,062 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $107K | 16,120 |
| [BRIDGEWAY CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/111441) | HOUSTON, TX | $89K | 13,466 |
| [HighTower Advisors, LLC](https://search.stillhousedata.com/firm/145323) | CHICAGO, IL | $79K | 11,000 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $239K | 0.03% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $227K | 0.30% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $14K | 0.00% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/910571108.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.