NioCorp Developments Ltd.
US ˙ NasdaqGM ˙ CA6544846091

SecurityNB / NioCorp Developments Ltd.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership205,216 shares
Latest Disclosed Value $ 915,256
Advisor Group Holdings, Inc. reports 19.91% increase in ownership of NB / NioCorp Developments Ltd.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 205,216 shares of NioCorp Developments Ltd. (US:NB) valued at $915,263 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 171,136 shares of NioCorp Developments Ltd.. This represents a change in shares of 19.91% during the quarter. The current value of the position is $1,190,253 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F NIOCORP DEVS COM NEW 654484609 205,216 34,080 19.91 915 0.88 0.0008
2026-02-17 2025-12-31 13F NIOCORP DEVS COM NEW 654484609 171,136 26,512 18.33 907 25.97 0.0013
2025-11-14 2025-09-30 13F NIOCORP DEVS COM NEW 654484609 144,624 113,215 360.45 720 886.30 0.0010
2025-09-04 2025-06-30 13F/A-1 NIOCORP DEVS COM NEW 654484609 31,409 -17,234 -35.43 73 -23.16 0.0001
2025-08-13 2025-06-30 13F NIOCORP DEVS COM NEW 654484609 20,247 -28,396 43 0.0001
2025-05-12 2025-03-31 13F NIOCORP DEVS COM NEW 654484609 48,643 15,458 46.58 96 86.27 0.0002
2025-06-06 2024-12-31 13F/A-1 NIOCORP DEVS COM NEW 654484609 33,185 -150 -0.45 51 -29.17 0.0001
2025-02-07 2024-12-31 13F NIOCORP DEVS COM NEW 654484609 33,235 -100 55 0.0001
2024-11-13 2024-09-30 13F NIOCORP DEVS COM NEW 654484609 33,335 -2,504 -6.99 73 16.13 0.0002
2024-08-13 2024-06-30 13F NIOCORP DEVS COM NEW 654484609 35,839 -1,445 -3.88 62 -38.61 0.0001
2024-05-10 2024-03-31 13F NIOCORP DEVS COM NEW 654484609 37,284 2,041 5.79 101 -9.82 0.0002
2024-02-12 2023-12-31 13F NIOCORP DEVS COM NEW 654484609 35,243 -3,029 -7.91 112 -18.84 0.0002
2023-11-13 2023-09-30 13F NIOCORP DEVS COM NEW 654484609 38,272 638 1.70 139 -26.98 0.0002
2023-08-21 2023-06-30 13F/A-1 NIOCORP DEVS COM NEW 654484609 37,634 -155 -0.41 189 -21.25 0.0003
2023-08-10 2023-06-30 13F NIOCORP DEVS COM NEW 654484609 37,634 -155 189 0.0001
2023-05-12 2023-03-31 13F NIOCORP DEVS COM NEW 654484609 37,789 37,789 240 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.