Vault-13

SPOK HLDGS INC SPOK

COM · Common Stock · CUSIP 84863T106

88 institutional holders +2 vs Q1 2023
10,185,56010.2m shares reported held*
51.0% of all shares outstanding*
$135.4mreported value*
26 new 22 added 28 reduced 24 sold out net bought ≈ $5.9m (+482.9k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 20.0m as of 2023-07-21, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $13.29. Options: 4 managers hold calls ($194.4k notional), 7 hold puts ($7.0m).

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 60Q4 22: 79Q1 23: 86Q2 23: 8888Q3 22Q4 22Q1 23Q2 23
Numbers
QuarterHolders
Q3 202260
Q4 202279
Q1 202386
Q2 202388

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q4 22: 45 bought or addedQ4 22: 24 cut or sold outQ4 22Q1 23: 50 bought or addedQ1 23: 32 cut or sold outQ1 23Q2 23: 48 bought or addedQ2 23: 52 cut or sold outQ2 23
Numbers
QuarterBought or addedCut or sold out
Q4 20224524
Q1 20235032
Q2 20234852

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2m$4m$6m$8mQ3 22 calls: $4.6mQ3 22 puts: $744.0kQ3 22P/C 0.16Q4 22 calls: $339.1kQ4 22 puts: $1.1mQ4 22P/C 3.19Q1 23 calls: $159.7kQ1 23 puts: $3.1mQ1 23P/C 19.55Q2 23 calls: $194.4kQ2 23 puts: $7.0mQ2 23P/C 35.80
Numbers
QuarterCallsPutsP/C
Q3 2022$4.6m$744.0k0.16
Q4 2022$339.1k$1.1m3.19
Q1 2023$159.7k$3.1m19.55
Q2 2023$194.4k$7.0m35.80

Biggest buyers

BlackRock Inc. Added +808,001+808.0k
BANK OF MONTREAL /CAN/ New +232,107+232.1k
STATE STREET CORP Added +218,091+218.1k
GEODE CAPITAL MANAGEMENT, LLC Added +200,971+201.0k
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main New +130,573+130.6k
NORTHERN TRUST CORP Added +112,961+113.0k
Nuveen Asset Management, LLC Added +79,933+79.9k
VANGUARD GROUP INC Added +78,012+78.0k
MORGAN STANLEY Added +60,026+60.0k
CHARLES SCHWAB INVESTMENT MANAGEMENT INC New +50,484+50.5k

Biggest sellers

Penn Mutual Asset Management Reduced -213,350-213.3k
MARSHALL WACE, LLP Sold out -181,875-181.9k
PCG Wealth Advisors, LLC Sold out -162,471-162.5k
MILLENNIUM MANAGEMENT LLC Reduced -139,587-139.6k
JACOBS LEVY EQUITY MANAGEMENT, INC Reduced -124,916-124.9k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced -119,087-119.1k
Tidal Investments LLC Sold out -112,860-112.9k
JANE STREET GROUP, LLC Sold out -109,059-109.1k
Cubist Systematic Strategies, LLC Reduced -98,782-98.8k
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Reduced -83,357-83.4k

Biggest calls

CITADEL ADVISORS LLC Added $99.7k7.5k shares
GROUP ONE TRADING LLC New $79.7k6.0k shares
SIMPLEX TRADING, LLC Reduced $15.0k1.2k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

Parallax Volatility Advisers, L.P. New $3.7m275.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $2.6m198.7k shares
CITADEL ADVISORS LLC Added $620.6k46.7k shares
SUMMIT SECURITIES GROUP LLC Added $33.0k2.5k shares
SIMPLEX TRADING, LLC Reduced $10.0k800 shares
GROUP ONE TRADING LLC New $1.3k100 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
RENAISSANCE TECHNOLOGIES LLC 13G · institution new · filed 2025-08-13 5.1% new 1.1m≈ $10.8m 2025-08-13

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)

Insider purchases and sales in Q2 2023

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
10010Q3 21: 0 buyingQ3 21: 0 sellingQ4 21: 0 buyingQ4 21: 0 sellingQ4 21Q1 22: 0 buyingQ1 22: 0 sellingQ2 22: 4 buyingQ2 22: 0 sellingQ2 22Q3 22: 6 buyingQ3 22: 0 sellingQ4 22: 3 buyingQ4 22: 0 sellingQ4 22Q1 23: 3 buyingQ1 23: 0 sellingQ2 23: 1 buyingQ2 23: 0 sellingQ2 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20210—0——
Q4 20210—0——
Q1 20220—0——
Q2 20224$753.7k0——
Q3 20226$3.9m0——
Q4 20223$557.1k0——
Q1 20233$418.8k0——
Q2 20231$5.0k0——
DateInsiderTradeSharesPrice ValueTheir holding
2023-06-01 Rice Calvin Chief Financial Officer & CAO Bought 420 $11.90 $5.0k420 shares +2%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.00% of their portfolio New York, NY 1,230,6661.2m $16.4m $16.4m 0.00% Added +808.0k +808,001
2 RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio NEW YORK, NY 1,198,9171.2m $15.9m $15.9m 0.02% Reduced -17.1k -17,105
3 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 935,227935.2k $12.4m $12.4m 0.00% Added +78.0k +78,012
4 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 814,544814.5k $10.8m $10.8m 0.00% Reduced -42.9k -42,935
5 HighTower Advisors, LLC 0.01% of their portfolio CHICAGO, IL 554,227554.2k $7.4m $7.4m 0.01% Reduced -1.1k -1,129
6 Foundry Partners, LLC 0.37% of their portfolio MINNEAPOLIS, MN 453,920453.9k $6.0m $6.0m 0.37% Reduced -82.1k -82,060
7 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 394,264394.3k $5.2m $5.2m 0.00% Added +201.0k +200,971
8 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio BOSTON, MA 381,756381.8k $5.1m $5.1m 0.01% Reduced -83.4k -83,357
9 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 341,313341.3k $4.5m $4.5m 0.01% Added +12.8k +12,779
10 TWO SIGMA ADVISERS, LP 0.01% of their portfolio NEW YORK, NY 298,400298.4k $4.0m $4.0m 0.01% Added +29.6k +29,600
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 286,445286.4k $3.8m $3.8m 0.00% Added +218.1k +218,091
12 FULLER & THALER ASSET MANAGEMENT, INC. 0.02% of their portfolio SAN MATEO, CA 258,833258.8k $3.4m $3.4m 0.02% Reduced -440 -440
13 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 232,107232.1k $3.1m $3.1m 0.00% New
14 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 186,762186.8k $2.5m $2.5m 0.00% Added +113.0k +112,961
15 PRELUDE CAPITAL MANAGEMENT, LLC 0.20% of their portfolio NEW YORK, NY 185,190185.2k $2.5m $2.5m 0.20% Reduced -632 -632
16 Informed Momentum Co LLC 0.45% of their portfolio SOLANA BEACH, CA 180,912180.9k $2.4m $2.4m 0.45% Unchanged
17 Penn Mutual Asset Management 2.01% of their portfolio Conshohocken, PA 167,910167.9k $2.2m $2.2m 2.01% Reduced -213.3k -213,350
18 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 159,446159.4k $2.1m $2.1m 0.00% Added +45.4k +45,364
19 DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.00% of their portfolio FRANKFURT AM MAIN, 2M 130,573130.6k $1.7m $1.7m 0.00% New
20 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 127,050127.0k $1.7m $1.7m 0.00% Added +60.0k +60,026
21 JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio FLORHAM PARK, NJ 118,899118.9k $1.6m $1.6m 0.01% Reduced -124.9k -124,916
22 KENNEDY CAPITAL MANAGEMENT LLC 0.04% of their portfolio ST LOUIS, MO 116,775116.8k $1.6m $1.6m 0.04% Unchanged
23 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 114,220114.2k $1.5m $1.5m 0.00% Added +79.9k +79,933
24 GSA CAPITAL PARTNERS LLP 0.15% of their portfolio LONDON, X0 109,691109.7k $1.5m $1.5m 0.15% Added +34.0k +34,004
25 Trexquant Investment LP 0.04% of their portfolio STAMFORD, CT 107,114107.1k $1.4m $1.4m 0.04% Added +12.2k +12,216
26 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio HOUSTON, TX 71,11671.1k $945.1k $945.1k 0.02% Reduced -25.0k -25,000
27 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 63,16063.2k $839.4k $839.4k 0.00% Added +23.8k +23,825
28 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 61,33761.3k $815.2k $815.2k 0.00% Reduced -119.1k -119,087
29 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 57,66057.7k $766.3k $766.3k 0.00% Reduced -746 -746
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 54,20254.2k $720.3k $720.3k 0.00% Reduced -44.4k -44,384
31 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 50,48450.5k $670.9k $670.9k 0.00% New
32 Grantham, Mayo, Van Otterloo & Co. LLC 0.00% of their portfolio Boston, MA 42,87842.9k $569.8k $569.8k 0.00% Reduced -1.1k -1,100
33 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 39,96140.0k $531.1k $531.1k 0.00% New
34 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 38,30038.3k $509.0k $509.0k 0.00% New
35 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 33,67833.7k $445.4k $445.4k 0.00% Added +33.3k +33,294
36 Allspring Global Investments Holdings, LLC 0.00% of their portfolio CHARLOTTE, NC 31,62531.6k $420.3k $420.3k 0.00% Reduced -4.7k -4,675
37 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 28,54928.5k $380.0k $380.0k 0.00% Added +12.0k +11,980
38 Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio FAIRFIELD, IA 28,33928.3k $377.0k $377.0k 0.00% New
39 Man Group plc 0.00% of their portfolio LONDON, X0 28,20028.2k $374.8k $374.8k 0.00% New
40 BAILARD, INC. 0.01% of their portfolio Foster City, CA 27,07927.1k $359.9k $359.9k 0.01% Unchanged
41 UBS Group AG 0.00% of their portfolio ZURICH, V8 26,49826.5k $352.2k $352.2k 0.00% Added +21.5k +21,459
42 OCCUDO QUANTITATIVE STRATEGIES LP 0.04% of their portfolio FORT LAUDERDALE, FL 25,59025.6k $340.1k $340.1k 0.04% Reduced -5.9k -5,901
43 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 25,13425.1k $334.0k $334.0k 0.00% New
44 WINTON GROUP Ltd 0.03% of their portfolio LONDON, X0 24,13924.1k $320.8k $320.8k 0.03% New
45 LSV ASSET MANAGEMENT 0.00% of their portfolio CHICAGO, IL 21,70021.7k $288.0k $288.0k 0.00% Unchanged
46 Global Retirement Partners, LLC 0.01% of their portfolio San Rafael, CA 20,75720.8k $275.9k $275.9k 0.01% Added +1.8k +1,840
47 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 20,46720.5k $272.0k $272.0k 0.00% Reduced -98.8k -98,782
48 Parallax Volatility Advisers, L.P. 0.01% of their portfolio San Francisco, CA 18,58218.6k $247.0k $247.0k 0.01% New
49 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 17,15317.2k $228.0k $228.0k 0.00% Added +14.8k +14,847
50 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio COLUMBUS, OH 17,14117.1k $228.0k $228.0k 0.00% Unchanged
51 Engineers Gate Manager LP 0.01% of their portfolio NEW YORK, NY 17,08717.1k $227.1k $227.1k 0.01% Reduced -22.9k -22,909
52 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 16,90716.9k $224.7k $224.7k 0.00% Reduced -1.6k -1,649
53 DekaBank Deutsche Girozentrale 0.00% of their portfolio FRANKFURT, 2M 16,45716.5k $217.0k $217.0k 0.00% New
54 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 16,04016.0k $213.2k $213.2k 0.00% New
55 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 16,00116.0k $212.7k $212.7k 0.00% Added +10.3k +10,330
56 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 14,34114.3k $190.6k $190.6k 0.00% Reduced -139.6k -139,587
57 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 13,78413.8k $183.2k $183.2k 0.00% Reduced -11.9k -11,874
58 Jump Financial, LLC 0.01% of their portfolio Chicago, IL 13,50013.5k $179.4k $179.4k 0.01% Reduced -2.4k -2,400
59 TOCQUEVILLE ASSET MANAGEMENT L.P. 0.00% of their portfolio New York, NY 10,50010.5k $139.5k $139.5k 0.00% Unchanged
60 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 10,32310.3k $137.2k $137.2k 0.00% Reduced -21.9k -21,872
61 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 9,3639.4k $124.4k $124.4k 0.00% New
62 FMR LLC 0.00% of their portfolio BOSTON, MA 8,6438.6k $114.9k $114.9k 0.00% Added +7.9k +7,875
63 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 8,5568.6k $113.7k $113.7k 0.00% New
64 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 7,3007.3k $97.0k $97.0k 0.00% New
65 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 6,1706.2k $82.0k $82.0k 0.00% Added +2.2k +2,170
66 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 6,0686.1k $81.0k $81.0k 0.00% Unchanged
67 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 5,9145.9k $78.6k $78.6k 0.00% New
68 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 5,3075.3k $70.5k $70.5k 0.00% Reduced -34.4k -34,405
69 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 4,7954.8k $63.0k $63.0k 0.00% New
70 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 3,5523.6k $47.2k $47.2k 0.00% Reduced -59.1k -59,095
71 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 3,1283.1k $41.6k $41.6k 0.00% Reduced -20.3k -20,315
72 SUMMIT SECURITIES GROUP LLC 0.01% of their portfolio NEW YORK, NY 2,5002.5k $33.0k $33.0k 0.01% Added +1.2k +1,200
73 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 1,9101.9k $25.4k $25.4k 0.00% New
74 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 1,7291.7k $23.0k $23.0k 0.00% New
75 Legal & General Group Plc 0.00% of their portfolio London, X0 1,6591.7k $22.0k $22.0k 0.00% New
76 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,4681.5k $19.5k $19.5k 0.00% New
77 Metropolitan Life Insurance Co/NY 0.00% of their portfolio New York, NY 970970 $12.9k $12.9k 0.00% New
78 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 800800 $11.5k $11.5k 0.00% New
79 SouthState Bank Corp 0.00% of their portfolio Winter Haven, FL 730730 $9.7k $9.7k 0.00% Unchanged
80 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 375375 $5.0k $5.0k 0.00% Unchanged
81 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 268268 $3.6k $3.6k 0.00% Reduced -6.4k -6,366
82 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 189189 $2.5k $2.5k 0.00% New
83 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 155155 $2.1k $2.1k 0.00% Reduced -24 -24
84 CWM, LLC 0.00% of their portfolio OMAHA, NE 7777 $1.0k $1.0k 0.00% New
85 Capital Advisors, Ltd. LLC 0.00% of their portfolio SHAKER HEIGHTS, OH 6565 $1.0k $1.0k 0.00% Unchanged
86 Ridgewood Investments LLC 0.00% of their portfolio SPRINGFIELD, NJ 2727 $356 $356 0.00% Unchanged
87 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 1212 $159 $159 0.00% New
88 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged