What is the StonkWhisper Whisper Index?

The Whisper Index is StonkWhisper's proprietary market sentiment score (0–90) that aggregates retail investor discussion velocity, volume, and sentiment across Reddit, StockTwits, and other social platforms for 500+ U.S. equities in real time.

What is dark pool trading and why does it matter for stock analysis?

Dark pools are off-exchange trading venues where large institutional orders execute away from public markets. StonkWhisper tracks FINRA-reported dark pool volume to identify unusual institutional accumulation or distribution that may precede significant price moves.

How does StonkWhisper track congressional stock trades?

The STOCK Act requires U.S. Congress members to disclose personal stock trades within 45 days. StonkWhisper monitors these mandatory disclosures in near real-time, surfacing trades by legislators who may have non-public information advantages.

Northern Trust increased ISSC position by 27,305 shares

May 15, 2026Last updated Jul 9, 2026

This StonkWhisper whale intelligence report documents significant institutional position changes in $ISSC based on SEC 13F filings and block-level trading data. Quarterly 13F disclosures are required for institutional investment managers with at least $100 million in qualifying assets under management. These filings reveal long positions in U.S. equities held as of quarter end. Material changes in institutional positioning — particularly from concentrated funds with a history of high-conviction bets — are tracked by StonkWhisper as leading indicators of institutional thesis formation or exit.

NORTHERN TRUST CORP AUM: $756.6B INCREASED

AUM: $756.6B · 19,864 holdings · Period: 2025-12-31

+27,305 Share Change

28,705 Current Shares

$543.7M Current Value

0.00% Portfolio %

+1950.4% Change %

Position Change Detail

Issuer INNOVATIVE SOLUTIONS & SUPPO

Ticker ISSC

Shares 1,400 → 28,705 +27,305

Value $17.5M → $543.7M

Portfolio Weight 0.00%

Change Type Increased

Period of Report 2025-12-31

Other Northern Trust Positions This Period

Ticker	Issuer	Change Type	Share Change	Value
MYPS	PLAYSTUDIOS INC	Increased	+637,598	$427.6M
TMCI	TREACE MED CONCEPTS INC	Increased	+365,608	$921.1M
GDRX	GOODRX HLDGS INC	Increased	+355,900	$976.0M
CMCSA	COMCAST CORP NEW	Increased	+282,732	$18.7B
INTC	INTEL CORP	Decreased	265,122	$50.0B
VT	VANGUARD INTL EQUITY INDEX F	Decreased	255,438	$176.0B
RC	READY CAPITAL CORP	Increased	+231,035	$511.8M
XLK	SELECT SECTOR SPDR TR	Increased	+213,137	$60.6B
EWCZ	EUROPEAN WAX CTR INC	Increased	+205,254	$757.8M
BAC	VERIZON COMMUNICATIONS INC	Increased	+204,738	$27.8B

Other Whales Moving ISSC This Period

Manager	Change Type	Share Change
Millennium	Increased	+259,561
Marshall Wace	Increased	+205,094
Winton	Exited	89,864
Renaissance Tech	Decreased	57,866
Point72	New	+49,475
Hudson Bay	New	+23,588
Gabelli	Increased	+22,313
Corsair Capital	Exited	19,844
Citadel	Increased	+7,200
Arrowstreet	Decreased	6,267

View all sentiment, news, and whale activity for ISSC (INNOVATIVE SOLUTIONS & SUPPO).

Track Northern Trust and other whale moves in real time on The Wire →

Get alerts when new 13F filings drop — Go Pro →

Data sourced from SEC 13F institutional holdings filings. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of institutional filings. 13F filings are reported quarterly and may lag actual positions.

Last updated: July 09, 2026 at 06:00 UTC