IDA in the 13F filings

Idacorp Inc · CUSIP 451107106

Sector · Utilities Theme · Electric utilities Theme · Energy and power infrastructure· L3VLUP-defined

Quarter

Q3 2026 · early filers Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024 Q4 2023

Quarter end: 31 Mar 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 31; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 9 listed it in both
Shares listed: 12,306,084; combined, among listed positions
Reported value: $1.7bn; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 11 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,616,013.

Managers listing IDA in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

31 of 31 holders

				Action		Filing
Wellington Management Group LLP	2,856,235	$408m	0.08%	Trimmed	-162,302	15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	1,441,538	$206m	under 0.1%	Added	+505,118	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	1,350,480	$193m	0.16%	Added	+816,443	15 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	1,313,454	$188m	0.14%	Added	+13,723	27 Oct 2026 (the filing on sec.gov)
Capital World Investors	1,186,800	$170m	under 0.1%	New	new	13 May 2026 (the filing on sec.gov)
AllianceBernstein LP	1,199,901	$152m	under 0.1%	Trimmed	-137,716	15 May 2026 (the filing on sec.gov)
Soros Fund Management LLC	577,290	$83m	0.91%	Trimmed	-7,766	15 May 2026 (the filing on sec.gov)
Invesco Ltd	521,141	$75m	under 0.1%	Trimmed	-114,061	12 May 2026 (the filing on sec.gov)
Capital Research Global Investors	460,000	$66m	under 0.1%	Added	+108,300	13 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC	378,882	$54m	0.06%	Added	+141,476	15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	162,124	$23m	under 0.1%	Added	+130,798	15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	128,268	$18m	under 0.1%	Added	+79,051	15 May 2026 (the filing on sec.gov)
Bridgewater Associates LP	95,543	$14m	0.06%	Added	+38,721	15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	88,960	$13m	under 0.1%	Added	+58,187	15 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC	78,708	$11m	under 0.1%	Added	+24,920	15 May 2026 (the filing on sec.gov)
Tudor Investment Corp	63,333	$9.1m	under 0.1%	Added	+49,281	15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	61,306	$8.7m	under 0.1%	Added	+9,357	15 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	59,774	$8.5m	0.06%	Added	+21,751	15 May 2026 (the filing on sec.gov)
First Eagle Investment Management LLC	41,573	$5.9m	under 0.1%	Trimmed	-49,739	14 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	34,750	$5.0m	under 0.1%	Added	+31,998	15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.	32,627	$4.7m	under 0.1%	Added	+27,195	15 May 2026 (the filing on sec.gov)
Jane Street Group LLC	26,543	$3.8m	under 0.1%	Added	+23,715	12 May 2026 (the filing on sec.gov)
Millennium Management LLC	25,067	$3.6m	under 0.1%	Trimmed	-113,653	15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	24,657	$3.5m	under 0.1%	Held	0	18 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	22,325	$3.2m	under 0.1%	Added	+18,070	15 May 2026 (the filing on sec.gov)

Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Capital World Investorsnew position · 1,186,800 shares now+1,186,800
Two Sigma Investments LPexisting position · 1,350,480 shares now+816,443
Fidelity (FMR LLC)existing position · 1,441,538 shares now+505,118
Squarepoint Ops LLCexisting position · 378,882 shares now+141,476
Citadel Advisors LLCexisting position · 162,124 shares now+130,798

Reductions

Wellington Management Group LLPexisting position · 2,856,235 shares now-162,302
AllianceBernstein LPexisting position · 1,199,901 shares now-137,716
Invesco Ltdexisting position · 521,141 shares now-114,061
Millennium Management LLCexisting position · 25,067 shares now-113,653
First Eagle Investment Management LLCexisting position · 41,573 shares now-49,739

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Capital World Investors$170m
Winton Group Ltd$1.2m

Exited (4)

Renaissance Technologies LLCwas $5.2m
Verition Fund Management LLCwas $4.8m
Hudson Bay Capital Management LPwas $626k
Artisan Partners LPwas $239k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

7 in Q3 2024 to 16 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

IDA by quarter
Quarter	Holders	Reported value	Buyers	Sellers
Q2 2013	2	$212m	n.a.	n.a.
Q3 2013	3	$219m	n.a.	n.a.
Q4 2013	2	$232m	n.a.	n.a.
Q1 2014	3	$247m	n.a.	n.a.
Q2 2014	2	$257m	n.a.	n.a.
Q3 2014	3	$240m	n.a.	n.a.
Q4 2014	2	$293m	n.a.	n.a.
Q1 2015	1	$277m	n.a.	n.a.
Q2 2015	3	$247m	n.a.	n.a.
Q3 2015	1	$283m	n.a.	n.a.
Q4 2015	2	$583m	n.a.	n.a.
Q1 2016	5	$493m	n.a.	n.a.
Q2 2016	2	$414m	n.a.	n.a.
Q3 2016	3	$404m	n.a.	n.a.
Q4 2016	2	$415m	n.a.	n.a.
Q1 2017	2	$425m	n.a.	n.a.
Q2 2017	2	$407m	n.a.	n.a.
Q3 2017	2	$371m	n.a.	n.a.
Q4 2017	2	$61m	n.a.	n.a.
Q1 2018	4	$85m	n.a.	n.a.
Q2 2018	3	$92m	n.a.	n.a.
Q3 2018	4	$135m	n.a.	n.a.
Q4 2018	8	$152m	n.a.	n.a.
Q1 2019	6	$168m	n.a.	n.a.
Q2 2019	12	$295m	n.a.	n.a.
Q3 2019	9	$320m	n.a.	n.a.
Q4 2019	7	$228m	n.a.	n.a.
Q1 2020	9	$223m	n.a.	n.a.
Q2 2020	8	$163m	n.a.	n.a.
Q3 2020	10	$163m	n.a.	n.a.
Q4 2020	4	$140m	n.a.	n.a.
Q1 2021	6	$416m	n.a.	n.a.
Q2 2021	4	$457m	n.a.	n.a.
Q3 2021	4	$538m	n.a.	n.a.
Q4 2021	6	$598m	n.a.	n.a.
Q1 2022	6	$613m	n.a.	n.a.
Q2 2022	7	$548m	n.a.	n.a.
Q3 2022	4	$213m	n.a.	n.a.
Q4 2022	3	$206m	n.a.	n.a.
Q1 2023	3	$202m	n.a.	n.a.
Q2 2023	4	$188m	n.a.	n.a.
Q3 2023	5	$179m	n.a.	n.a.
Q4 2023	9	$364m	8	2
Q1 2024	7	$338m	6	2
Q2 2024	7	$351m	4	3
Q3 2024	7	$483m	5	1
Q4 2024	6	$649m	4	2
Q1 2025	9	$732m	6	2
Q2 2025	13	$889m	10	2
Q3 2025	13	$979m	4	8
Q4 2025	11	$987m	21	14
Q1 2026	16	$1.4bn	21	11
Q2 2026	16	$1.4bn	19	13

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

IDA and SO →IDA and D →IDA and NEE →Choose a stock to compare with IDA →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own IDA, latest filings →Back to the 13F Explorer →

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