Warberg Asset Management LLC — 13F Holdings & Portfolio

CIK 1597506 · latest 13F-HR filed 2026-08-11

Warberg Asset Management LLC manages $551.1M in 13F-reported U.S. long-equity assets across 170 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are SPY (31.25%), GVA (8.51%), MCHP (7.62%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 44 new positions and exited 65; 21 existing positions rose in reported value and 42 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

AUM

$551.1M

Long-equity book

Holdings

170

Distinct positions

Period

2026-06-30

Filed 2026-08-11

Q/Q Activity

+44 / −65 / ↑21 / ↓42

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26

GVA13.9% · new MCHP12.5% · +38%ATRO9.3% · +326%LIVE5.6% · new NN4.5% · new CLM4.1% · +76%GH3.7% · new HPEPC3.5% · new TXNM2.6% · +36%FWONA2.5% · new CORZW2.1% · +44%ORA2.1% · new AKAM2.0% · +100%APO2.0% · new LITE2.0% · -90%LCII1.8% · -15%ALNY1.8% · 0%T1.5% · new JAZZ1.3% · new ATEN1.3% · new MIRM1.1% · new SNOW1.0% · -50%FLR1.0% · new EPRPC0.9% · +15%EVRG0.7% · +49%CENX0.7% · +432%UBER0.7% · 0%STXS0.6% · +1%POST0.5% · -14%EPRPE0.5% · +10%ALBPA0.5% · -21%FGII0.4% · -3%BACPL0.4% · -21%XSLL0.4% · -3%WT0.4% · -92%VNME0.3% · -7%CAIIU0.3% · new PTOR0.3% · 0%RVMDW0.3% · new NEN0.3% · -15%KIMPN0.3% · new ORIQ0.3% · 0%BKHA0.3% · -1%AMPGZ0.3% · +32%DBCA0.2% · -0%KCHV0.2% · -5%XCBE0.2% · 0%ACGC0.2% · new VHCP0.2% · -0%RFAM0.2% · -0%SVAQ0.2% · -12%AMPX0.2% · new GDXJ0.2% · new USAR0.2% · 0%VAL.WS0.2% · +52%CRAQ0.2% · 0%JABRU0.2% · new BRKHU0.1% · new ARTC0.1% · 0%CRAC0.1% · -0%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

3 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 62.3%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

Assets Under Management

$805.9M

Discretionary

$799.9M

Employees

Accounts

Address

716 OAK STREET
WINNETKA, IL 60093

Phone

(847) 418-8305

Name	Title / Status	Ownership	Type
BLUMBERG, JONATHAN, ALAN Control	MANAGING MEMBER	25–50%	Individual
LANCASTER, TRACY, LEE Control	CCO/CFO	Less than 5%	Individual
WARSH, DANIEL, IRWIN Control	MANAGING MEMBER	50–75%	Individual
GRAD, BRIAN, REEVES	OWNER	5–10%	Individual

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

ASTRONICS CORP$26.1M +502.8%
MICROCHIP TECHNOLOGY INC.$21.6M +105.6%
CORNERSTONE STRATEGIC INVEST$6.3M +83.0%
CORE SCIENTIFIC INC NEW$4.9M +209.1%
LIVE NATION ENTERTAINMENT IN$2.8M +17.4%

Show all 21 →

Top Trims

OCCIDENTAL PETE CORP-$20.5M -98.1%
HALOZYME THERAPEUTICS INC-$2.6M -33.8%
WISDOMTREE INC-$2.1M -63.2%
LCI INDS-$1.7M -21.3%
SNOWFLAKE INC-$1.3M -27.6%

Show all 42 →

New Positions

Show all 44 →

Exited Positions

LUMENTUM HLDGS INC$68.5M
SEAGATE HDD CAYMAN$36.0M
CNX RES CORP$34.4M
WISDOMTREE INC$10.2M
VENTAS RLTY LTD PARTNERSHIP$8.1M

Show all 65 →

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#	Issuer	Symbol	CUSIP	Value	Δ

Warberg Asset Management LLC Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

#	Issuer	Symbol	CUSIP	Value	Weight	Shares	Type
1	STATE STR SPDR S&P 500 ETF T Put	SPY	78462F103	$172.2M	31.25%	230,600	SH
2	GRANITE CONSTR INC	GVA	387328AD9	$46.9M	8.51%	14,102,000	PRN
3	MICROCHIP TECHNOLOGY INC.	MCHP	595017AF1	$42.0M	7.62%	15,275,000	PRN
4	ASTRONICS CORP	ATRO	046433AD0	$31.3M	5.69%	7,185,000	PRN
5	LIVE NATION ENTERTAINMENT IN	LYV	538034BA6	$19.0M	3.46%	10,684,000	PRN
6	NEXTNAV INC	NN	65345N106	$15.3M	2.78%	859,839	SH
7	INVESCO QQQ TR Put	QQQ	46090E103	$14.0M	2.54%	19,000	SH
8	CORNERSTONE STRATEGIC INVEST	CLM	21924B302	$13.9M	2.52%	1,836,581	SH
9	GUARDANT HEALTH INC	GH	40131MAD1	$12.6M	2.28%	5,000,000	PRN
10	HEWLETT PACKARD ENTERPRISE C	HPEPC	42824C208	$11.7M	2.12%	100,154	SH
11	TXNM ENERGY INC	TXNM	69349HAF4	$8.9M	1.61%	6,809,000	PRN
12	LIBERTY MEDIA CORP DEL	FWONA	531229AP7	$8.6M	1.56%	7,500,000	PRN
13	CORE SCIENTIFIC INC NEW	CORZW	21874A114	$7.2M	1.31%	385,028	SH
14	ORMAT TECHNOLOGIES INC	ORA	686688AB8	$7.2M	1.31%	5,700,000	PRN
15	APOLLO GLOBAL MGMT INC	APO	03769M304	$6.7M	1.22%	110,589	SH
16	LUMENTUM HLDGS INC	LITE	55024UAF6	$6.7M	1.21%	1,020,000	PRN
17	LCI INDS	LCII	501812AD3	$6.2M	1.12%	5,500,000	PRN
18	ALNYLAM PHARMACEUTICALS INC	ALNY	02043QAB3	$6.0M	1.09%	5,002,000	PRN
19	AKAMAI TECHNOLOGIES INC	AKAM	00971TAQ4	$5.1M	0.93%	3,500,000	PRN
20	HALOZYME THERAPEUTICS INC	—	40637HAF6	$5.1M	0.93%	3,500,000	PRN
21	NVIDIA CORPORATION Put	NVDA	67066G104	$4.4M	0.80%	22,000	SH
22	JAZZ INVESTMENTS I LTD	JAZZ	472145AH4	$4.3M	0.77%	2,500,000	PRN
23	A10 NETWORKS INC	ATEN	002121AB7	$4.2M	0.77%	2,500,000	PRN
24	MIRUM PHARMACEUTICALS INC	MIRM	604749AB7	$3.9M	0.70%	1,045,000	PRN
25	SNOWFLAKE INC	SNOW	833445AD1	$3.5M	0.64%	2,000,000	PRN
26	ISHARES TR Put	TLT	464287432	$3.5M	0.64%	40,600	SH
27	FLUOR CORP	FLR	343412AJ1	$3.3M	0.60%	2,500,000	PRN
28	STATE STR SPDR S&P 500 ETF T Call	SPY	78462F103	$3.0M	0.54%	4,000	SH
29	EPR PPTYS	EPRPC	26884U208	$2.9M	0.53%	115,000	SH
30	VANECK ETF TRUST Put	SMH	92189F676	$2.6M	0.48%	4,000	SH
31	EVERGY INC	EVRG	30034WAD8	$2.5M	0.45%	1,747,000	PRN
32	CENTURY ALUM CO	CENX	156431AQ1	$2.5M	0.45%	1,000,000	PRN
33	UBER TECHNOLOGIES INC	UBER	90353TAM2	$2.3M	0.43%	1,953,000	PRN
34	STEREOTAXIS INC	STXS	85916J409	$1.9M	0.35%	1,108,889	SH
35	POST HLDGS INC	POST	737446AT1	$1.8M	0.33%	1,728,000	PRN
36	AKAMAI TECHNOLOGIES INC	AKAM	00971TAN1	$1.8M	0.32%	1,500,000	PRN
37	EPR PPTYS	EPRPE	26884U307	$1.7M	0.32%	54,398	SH
38	ALBEMARLE CORP	ALBPA	012653200	$1.7M	0.30%	30,305	SH
39	ROUNDHILL ETF TRUST Put	DRAM	77926X320	$1.6M	0.28%	21,000	SH
40	FG IMPERII ACQUISITION CORP	FGII	G3R41C102	$1.5M	0.27%	149,908	SH
41	BANK OF AMER CORP	BACPL	060505682	$1.5M	0.27%	1,180	SH
42	XSOLLA SPAC 1	XSLL	G9833K102	$1.4M	0.25%	138,736	SH
43	UNITED AIRLS HLDGS INC Call	UAL	910047109	$1.4M	0.25%	10,000	SH
44	WISDOMTREE INC	WT	97717PAH7	$1.2M	0.22%	829,000	PRN
45	STARBUCKS CORP Put	SBUX	855244109	$1.2M	0.22%	11,900	SH
46	ESPERION THERAPEUTICS INC NE Put	ESPR	29664W105	$1.2M	0.21%	374,000	SH
47	ISHARES SILVER TR Call	SLV	46428Q109	$1.1M	0.21%	21,500	SH
48	VENDOME ACQUISITION CORP I	VNME	G9580A109	$1.1M	0.21%	111,183	SH
49	PAYPAL HLDGS INC Call	PYPL	70450Y103	$1.1M	0.20%	25,000	SH
50	COLLECTIVE ACQUISITION CORP	CAIIU	G22741121	$1.0M	0.18%	99,668	SH

Filing History

Period	Filed	AUM	Holdings	Accession
2026-06-30	2026-08-11	$551.1M	170	0001597506-26-000003
2026-03-31	2026-05-07	$599.6M	192	0001597506-26-000002
2025-12-31	2026-02-13	$831.2M	181	0001597506-26-000001

Filer Information

Address

716 OAK STREET
WINNETKA, IL 60093

Phone

(847) 418-8333

Filing Manager

Warberg Asset Management LLC

WINNETKA, IL

Signatory

Daniel I Warsh

Managing Member