MarketPeel
Insider Trading Intelligence
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JM

John D. Jr. Markley

IDCC
DIRECTOR · INTERDIGITAL, INC. · CIK 0001491492
FILING MIX · LIFETIME67%/33%
BUYS
34
SELLS
17
TOTAL VALUE
$1.35M
COMPANIES
1
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
11,735
AVG SELL PX
$123.44
TRADE KIND
SHOWING 51 / 51
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
9 backtested trades · 8 horizons · 5 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by John D. Jr. Markley, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d9+44.44%+0.49%-0.04%+0.53%+0.92%—
14d9+66.67%-0.85%+0.06%-0.91%+0.10%—
30d9+33.33%+0.40%+1.84%-1.45%-1.30%—
60d9+44.44%+2.94%+3.99%-1.05%-4.97%—
90d9+44.44%+5.49%+5.94%-0.45%-6.14%—
180d9(1 pending)+25.00%+22.61%+10.91%+11.70%+6.04%—
1y9(1 pending)+12.50%+31.82%+20.14%+11.68%+6.08%—
2y9(3 pending)+0.00%+92.78%+32.23%+60.55%+63.77%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
IDCC · 11,734.707 shares · as of Jun 22, 2026
03,7657,53111,29615,062202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 34 buys / 17 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
IDCC
INTERDIGITAL, INC.
SALE10b5-1
10b5-1 plan
400$300.00$120.0K11,734.707Jun 22, 2026Jun 23, 2026 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.864$253.91$21912,134.707Jun 11, 2026Jun 12, 2026 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
906——12,135.571Jun 10, 2026Jun 12, 2026 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
6.233——11,229.571Apr 22, 2026Apr 24, 2026 ↗View →
IDCC
INTERDIGITAL, INC.
SALE10b5-1
10b5-1 plan
700$374.95$262.5K11,223.338Feb 10, 2026Feb 12, 2026 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
7.053——11,923.338Jan 28, 2026Jan 30, 2026 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
6.421——11,916.285Oct 22, 2025Oct 24, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
8.778——11,909.864Jul 23, 2025Jul 25, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
SALE10b5-1
10b5-1 plan
692$222.00$153.6K11,901.086Jun 18, 2025Jun 18, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
SALE10b5-1
10b5-1 plan
692$220.62$152.7K12,593.086Jun 17, 2025Jun 18, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
1,036——13,285.086Jun 11, 2025Jun 13, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.678$223.51$15212,249.086Jun 5, 2025Jun 9, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
12.568——12,249.764Apr 23, 2025Apr 25, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
10.446——12,237.196Jan 22, 2025Jan 24, 2025 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
11.931——12,226.75Oct 23, 2024Oct 25, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
13.115——12,214.818Jul 24, 2024Jul 26, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
SALE10b5-1
10b5-1 plan
750$115.28$86.5K12,201.704Jun 11, 2024Jun 12, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.607$117.30$7112,951.704Jun 7, 2024Jun 10, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
1,711——12,952.31Jun 5, 2024Jun 7, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
17.847——11,241.31Apr 24, 2024Apr 26, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
16.851——11,223.464Jan 24, 2024Jan 26, 2024 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
22.883——11,206.613Oct 25, 2023Oct 27, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
16.75——11,183.73Jul 26, 2023Jul 28, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
2,162——11,166.98Jun 7, 2023Jun 9, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
1,100$86.17$94.8K9,004.98Jun 7, 2023Jun 9, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.295$83.49$2510,104.98Jun 1, 2023Jun 5, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
26.455——10,105.275Apr 26, 2023Apr 28, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
4,274$73.86$315.7K10,078.82Feb 27, 2023Feb 28, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
26.269——14,352.82Jan 25, 2023Jan 27, 2023 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
36.046——14,326.551Oct 26, 2022Oct 28, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
29.448——14,290.505Jul 27, 2022Jul 29, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
800$66.83$53.5K14,261.057Jun 6, 2022Jun 7, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.791$65.94$5215,061.057Jun 2, 2022Jun 3, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
2,877——15,061.848Jun 1, 2022Jun 3, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
27.74——12,184.848Apr 27, 2022Apr 29, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
23.691——12,157.108Jan 26, 2022Jan 28, 2022 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
23.491——12,133.418Oct 27, 2021Oct 29, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
23.434——12,109.927Jul 28, 2021Jul 30, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
800$83.24$66.6K12,086.494Jun 7, 2021Jun 9, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.126$82.64$1012,886.494Jun 3, 2021Jun 4, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
2,274——12,886.62Jun 2, 2021Jun 4, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
25.513——10,612.62Apr 28, 2021Apr 30, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
27.067——10,587.107Jan 27, 2021Jan 29, 2021 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
32.082——10,560.041Oct 28, 2020Oct 30, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
17.925——10,527.958Jul 29, 2020Jul 31, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
12.305——10,510.033Jul 22, 2020Jul 24, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
700$57.97$40.6K10,497.728Jul 17, 2020Jul 20, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
SALE
0.016$55.03$111,197.728Jun 12, 2020Jun 15, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
3,034——11,197.744Jun 3, 2020Jun 5, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
35.977——8,163.744Apr 22, 2020Apr 24, 2020 ↗View →
IDCC
INTERDIGITAL, INC.
PURCHASEGRANT
Stock grant
28.563——8,127.767Jan 22, 2020Jan 24, 2020 ↗View →
Other insiders · IDCC
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About this filer
CIK 0001491492
ROLE
Director
PRIMARY
IDCC
COMPANIES
1
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001491492DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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