# Pin Oak Investment Advisors Inc

> Pin Oak Investment Advisors Inc is an SEC-registered investment advisory firm in Houston, TX, registered since 1990, reporting $500 million to $1 billion in regulatory assets under management in its Form ADV filing dated April 1, 2026.

- CRD: 105550
- Filed as: PIN OAK INVESTMENT ADVISORS INC
- Also doing business as: PIN OAK INVESTMENT ADVISORS
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Houston, TX
- Filing period: October 2026
- Form ADV filing dated: April 1, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/105550
- AdvisorCensus page: https://advisorcensus.com/firm/pin-oak-investment-advisors-inc-houston-tx-105550

## Quick answers

**How is Pin Oak Investment Advisors Inc compensated?**
On its Form ADV (Item 5.E, October 2026), Pin Oak Investment Advisors Inc reports these compensation arrangements: a percentage of assets under its management; fixed fees (other than subscription fees); performance-based fees; other.

**Where is Pin Oak Investment Advisors Inc located?**
Pin Oak Investment Advisors Inc's principal office is in Houston, TX, according to its Form ADV.

**Is Pin Oak Investment Advisors Inc registered with the SEC or a state?**
Pin Oak Investment Advisors Inc is an SEC-registered investment advisory firm, registered since 1990. Status as filed: Approved. CRD 105550.

**How much does Pin Oak Investment Advisors Inc manage?**
Pin Oak Investment Advisors Inc reports $784,773,250 in regulatory assets under management in its Form ADV filing dated April 1, 2026 (100% discretionary).

**How have Pin Oak Investment Advisors Inc's assets and staff changed since 2021?**
In the Form ADV data for Pin Oak Investment Advisors Inc: Regulatory assets under management: $491,780,969 in the October 2021 data and $784,773,250 in the October 2026 data, up 60%. Total employees: 6 in October 2021 and 12 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Pin Oak Investment Advisors Inc serve?**
By number of clients on Form ADV Item 5.D: high net worth individuals (175); individuals (other than high net worth individuals) (123); pooled investment vehicles (other than investment companies and business development companies) (24).

**Which custodians does Pin Oak Investment Advisors Inc use?**
Pin Oak Investment Advisors Inc's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. as a custodian holding 10% or more of its separately managed account assets.

**Does Pin Oak Investment Advisors Inc report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/105550

**Does Pin Oak Investment Advisors Inc state an account minimum?**
Its Form ADV Part 2A brochure dated April 1, 2026 says: "The Company provides investment advice for clients with a preferred minimum of $2,000,000." "The Company’s minimum dollar amount for new clients can be excepted, raised or lowered at the sole discretion of the Company and is currently $2 million."

**What changed in Pin Oak Investment Advisors Inc's recent Form ADV filings?**
In the May 2026 filing data: Regulatory assets under management went from $671,937,578 to $784,773,250 (+17%).

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Fixed fees (other than subscription fees)
- Performance-based fees
- Other

### Fees and minimums (Form ADV Part 2A brochure dated April 1, 2026)

- Account minimum: $2,000,000 (the brochure says it may be waived or negotiated)

> The Company provides investment advice for clients with a preferred minimum of $2,000,000.

> The Company’s minimum dollar amount for new clients can be excepted, raised or lowered at the sole discretion of the Company and is currently $2 million.

As stated in the firm's brochure. Fees can differ by service and may be negotiable.

### Custodians (Schedule D, Section 5.K(3))
- Charles Schwab & Co., Inc.

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $784,773,250
- Discretionary: $784,773,250
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 123 | $43,932,659 |
| High net worth individuals | 175 | $367,982,638 |
| Banking or thrift institutions | 0 | $0 |
| Investment companies | 0 | $0 |
| Business development companies | 0 | $0 |
| Pooled investment vehicles (other than investment companies and business development companies) | 24 | $372,857,953 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 0 | $0 |
| Charitable organizations | 0 | $0 |
| State or municipal government entities (including government pension plans) | 0 | $0 |
| Other investment advisers | 0 | $0 |
| Insurance companies | 0 | $0 |
| Sovereign wealth funds and foreign official institutions | 0 | $0 |
| Corporations or other businesses not listed above | 0 | $0 |
| Other | 0 | $0 |

### Advisory services (Item 5.G)
- Financial planning services
- Portfolio management for individuals and/or small businesses
- Portfolio management for pooled investment vehicles (other than investment companies)
- Selection of other advisers (including private fund managers)

### Firm details
- Registered since: 1990 (36 years)
- Employees: 12 total, 5 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: LA, TX
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- [pinoak.com](https://pinoak.com)
- [pinoakinc.com](https://pinoakinc.com)

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $491,780,969 | 6 | April 6, 2021 |
| October 2022 | $616,588,013 | 7 | September 9, 2022 |
| October 2023 | $617,144,680 | 10 | April 3, 2023 |
| October 2024 | $673,159,453 | 9 | March 31, 2024 |
| October 2025 | $671,937,578 | 12 | April 2, 2025 |
| October 2026 | $784,773,250 | 12 | April 1, 2026 |

Regulatory assets under management: $491,780,969 in the October 2021 data and $784,773,250 in the October 2026 data, up 60%.
Total employees: 6 in October 2021 and 12 in October 2026.

## Changes in the filing (last 12 months)

### May 2026
- Regulatory assets under management went from $671,937,578 to $784,773,250 (+17%).

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Pin Oak Investment Advisors Inc (CRD 105550): Form ADV filing data as of October 2026.