Yorktown Management & Research Co Inc

CIK

1313559

Location

Forest, VA

Portfolio Value

Small $152,303,807

Diversification

Diversified

Filing Date

Global Rank

#5,201 / 8,700 ▲ 2421

Top Industry

Engineering & Construction 9.8%

Period ended 2 months ago

Filed Jul 23, 2026 · 51d

26 quarters · since Mar 2020

Portfolio Concentration

243 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

3.9%

−0.9 pts

Top 5

10.7%

−3.9 pts

Top 10

16.3%

−5.2 pts

HHI

Diversified−28

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Industrials	29.2%	$44,515,477	56
Technology	23.7%	$36,040,450	48
Healthcare	19.2%	$29,230,029	54
Financial Services	13.9%	$21,223,301	41
Consumer Cyclical	6.8%	$10,320,620	19
Basic Materials	2.5%	$3,737,212	7
Energy	2.2%	$3,332,898	9
Consumer Defensive	2.0%	$2,989,907	6
Real Estate	0.4%	$673,217	2
Utilities	0.2%	$240,696	1

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

22 positions

Ticker	Company	Δ Shares	Shares	Value
ACAD	Acadia Pharmaceuticals Inc	+13,400	25,450	$643,885
IONQ	IonQ, Inc.	+11,700	18,700	$995,962
KLAC	Kla Corp	+8,010	8,900	$2,685,219
ONON	On Holding AG	+7,450	14,950	$529,529
HG	Hamilton Insurance Group, Ltd.	+7,300	16,900	$573,586
EMBJ	Embraer S.A.	+5,000	9,200	$586,960
CECO	Ceco Environmental Corp	+4,309	17,209	$1,561,544
GH	Guardant Health, Inc.	+3,650	12,500	$1,875,375
WAL	Western Alliance Bancorporation	+3,500	7,200	$591,840
HALO	Halozyme Therapeutics, Inc.	+3,400	7,850	$614,419
MIRM	Mirum Pharmaceuticals, Inc.	+3,050	5,600	$655,592
CYTK	Cytokinetics Inc	+3,000	7,750	$660,222
SPXC	SPX Technologies, Inc.	+1,550	4,250	$1,041,972
NBIX	Neurocrine Biosciences Inc	+1,500	3,750	$632,025
HCI	HCI Group, Inc.	+1,400	3,200	$560,800
IBP	Installed Building Products, Inc.	+1,400	4,300	$988,312
AXSM	Axsome Therapeutics, Inc.	+1,250	4,850	$1,187,134
ENSG	Ensign Group, Inc	+1,100	4,600	$737,380
BBIO	BridgeBio Pharma, Inc.	+950	4,200	$312,816
DY	Dycom Industries Inc	+850	2,326	$1,176,002
RL	Ralph Lauren Corp	+760	1,460	$586,058
LPLA	LPL Financial Holdings Inc.	+750	2,850	$802,788
No positions match the current search.

Trimmed

Positions the filer reduced

10 positions

Ticker	Company	Δ Shares	Shares	Value
PANW	Palo Alto Networks Inc	−6,821	2,090	$712,731
PRIM	Primoris Services Corp	−2,050	4,100	$406,392
RMBS	Rambus Inc	−2,050	4,950	$657,063
MLI	Mueller Industries Inc	−2,050	12,400	$762,166
IESC	IES Holdings, Inc.	−830	5,510	$4,047,976
TOST	Toast, Inc.	−800	9,400	$261,508
AXON	Axon Enterprise, Inc.	−775	1,875	$1,051,143
FN	Fabrinet	−650	3,150	$1,770,552
NVMI	Nova Ltd.	−560	3,220	$1,748,266
FIX	Comfort Systems USA Inc	−250	2,960	$5,866,572
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
BE	Bloom Energy Corp	4,150	$1,256,205
SMTC	Semtech Corp	6,850	$1,108,672
LQDA	Liquidia Corp	12,700	$1,012,571
FPS	Forgent Power Solutions, Inc.	17,200	$960,792
LFST	LifeStance Health Group, Inc.	83,600	$895,356
DNLI	Denali Therapeutics Inc.	32,100	$825,612
BEAM	Beam Therapeutics Inc.	22,550	$773,916
LTH	Life Time Group Holdings, Inc.	16,450	$671,818
PACS	PACS Group, Inc.	15,600	$665,184
U	Unity Software Inc.	22,550	$644,479
CORT	Corcept Therapeutics Inc	6,500	$565,175
HNGE	Hinge Health, Inc.	6,700	$556,100
TWST	Twist Bioscience Corp	5,100	$524,688
TTMI	Ttm Technologies Inc	2,800	$523,656
BRKR	Bruker Corp	8,400	$505,512
OSCR	Oscar Health, Inc.	17,400	$496,248
ONDS	Ondas Inc.	59,250	$488,220
ALKS	Alkermes plc.	8,900	$466,315
VCYT	Veracyte, Inc.	7,750	$455,157
RIOT	Riot Platforms, Inc.	16,500	$451,770
RLAY	Relay Therapeutics, Inc.	23,200	$434,072
VC	Visteon Corp	4,350	$431,563
NAVN	Navan, Inc.	18,650	$426,525
ARQT	Arcutis Biotherapeutics, Inc.	16,000	$419,520
TVTX	Travere Therapeutics, Inc.	7,300	$414,713
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
AAXJ	iShares MSCI All Country Asia ex Japan ETF	79,000	$5,632,870
BWX	State Street SPDR Bloomberg International Treasury Bond ETF	23,000	$2,104,960
VIGI	Vanguard International Dividend Appreciation ETF	30,000	$1,970,700
PARR	Par Pacific Holdings, Inc.	9,900	$620,136
ZETA	Zeta Global Holdings Corp.	38,350	$610,532
TMDX	TransMedics Group, Inc.	5,800	$576,578
BROS	Dutch Bros Inc.	10,300	$521,798
CALX	Calix, Inc	9,000	$440,910
QLYS	Qualys, Inc.	4,700	$412,895
BL	Blackline, Inc.	11,000	$407,000
HRI	Herc Holdings Inc	4,000	$398,200
LIF	Life360, Inc.	9,000	$367,380
AVAV	AeroVironment Inc	1,994	$365,001
RDDT	Reddit, Inc.	2,650	$356,822
VSEC	Vse Corp	1,800	$331,920
HLNE	Hamilton Lane INC	3,300	$328,020
BMNR	Bitmine Immersion Technologies, Inc.	16,400	$324,392
OKTA	Okta, Inc.	4,100	$322,711
APPF	Appfolio Inc	1,950	$307,749
PCTY	Paylocity Holding Corp	2,800	$302,512
METC	Ramaco Resources, Inc.	19,150	$296,059
VEEV	Veeva Systems Inc	1,650	$289,839
DT	Dynatrace, Inc.	7,450	$275,501
PAY	Paymentus Holdings, Inc.	10,800	$274,320
PODD	Insulet Corp	1,300	$272,792
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

243 tracked positions · $152,303,807 total · as of Jun 30, 2026

All sectors Basic Materials Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 243 positions by value · page 1 of 5

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
FIX	Comfort Systems USA Inc Industrials	Reduced	2,960	-250	$5,866,572	+32.5%	3.85%
IESC	IES Holdings, Inc. Industrials	Reduced	5,510	-830	$4,047,976	+34.0%	2.66%
KLAC	Kla Corp Technology	Added	8,900	+8,010	$2,685,219	+104.9%	1.76%
GH	Guardant Health, Inc. Healthcare	Added	12,500	+3,650	$1,875,375	+129.4%	1.23%
SNEX	StoneX Group Inc. Financial Services	Held	15,750	0	$1,866,375	+46.9%	1.23%
FN	Fabrinet Technology	Reduced	3,150	-650	$1,770,552	−10.7%	1.16%
NVMI	Nova Ltd. Technology	Reduced	3,220	-560	$1,748,266	+6.5%	1.15%
ACMR	ACM Research, Inc. Technology	Held	13,300	0	$1,687,637	+222.5%	1.11%
ANET	Arista Networks, Inc. Technology	Held	9,800	0	$1,664,824	+38.4%	1.09%
WCC	Wesco International Inc Industrials	Held	4,550	0	$1,571,706	+26.2%	1.03%
FTAI	FTAI Aviation Ltd. Industrials	Held	5,800	0	$1,569,074	+10.4%	1.03%
CECO	Ceco Environmental Corp Industrials	Added	17,209	+4,309	$1,561,544	+103.2%	1.03%
RBC	RBC Bearings INC Industrials	Held	1,970	0	$1,268,798	+18.6%	0.83%
BE	Bloom Energy Corp Industrials	NEW	4,150	NEW	$1,256,205	NEW	0.82%
AXSM	Axsome Therapeutics, Inc. Healthcare	Added	4,850	+1,250	$1,187,134	+95.1%	0.78%
DY	Dycom Industries Inc Industrials	Added	2,326	+850	$1,176,002	+135.2%	0.77%
WWD	Woodward, Inc. Industrials	Held	2,750	0	$1,169,960	+18.9%	0.77%
CAMT	Camtek Ltd Technology	Held	7,050	0	$1,149,996	+7.6%	0.76%
APLD	Applied Digital Corp. Technology	Held	30,350	0	$1,132,055	+57.1%	0.74%
SMTC	Semtech Corp Technology	NEW	6,850	NEW	$1,108,672	NEW	0.73%
MOD	Modine Manufacturing Co Consumer Cyclical	Held	4,150	0	$1,108,133	+23.2%	0.73%
IBKR	Interactive Brokers Group, Inc. Financial Services	Held	12,400	0	$1,079,296	+29.8%	0.71%
FCFS	FirstCash Holdings, Inc. Financial Services	Held	4,950	0	$1,070,784	+15.1%	0.70%
XMTR	Xometry, Inc. Industrials	Held	11,050	0	$1,066,546	+136.3%	0.70%
CW	Curtiss Wright Corp Industrials	Held	1,400	0	$1,060,864	+11.3%	0.70%
AXON	Axon Enterprise, Inc. Industrials	Reduced	1,875	-775	$1,051,143	−6.6%	0.69%
SPXC	SPX Technologies, Inc. Industrials	Added	4,250	+1,550	$1,041,972	+93.0%	0.68%
DDOG	Datadog, Inc. Technology	Held	4,000	0	$1,041,440	+120.6%	0.68%
DGII	Digi International Inc Technology	Held	13,700	0	$1,026,815	+55.5%	0.67%
LQDA	Liquidia Corp Healthcare	NEW	12,700	NEW	$1,012,571	NEW	0.66%
IONQ	IonQ, Inc. Technology	Added	18,700	+11,700	$995,962	+393.5%	0.65%
IBP	Installed Building Products, Inc. Consumer Cyclical	Added	4,300	+1,400	$988,312	+28.5%	0.65%
RJF	Raymond James Financial Inc Financial Services	Held	6,450	0	$980,593	+5.0%	0.64%
LITE	Lumentum Holdings Inc. Technology	Held	1,125	0	$965,317	+22.1%	0.63%
FPS	Forgent Power Solutions, Inc. Industrials	NEW	17,200	NEW	$960,792	NEW	0.63%
CASY	Caseys General Stores Inc Consumer Cyclical	Held	1,200	0	$953,748	+9.2%	0.63%
MEDP	Medpace Holdings, Inc. Healthcare	Held	1,800	0	$953,262	+10.3%	0.63%
PEN	Penumbra Inc Healthcare	Held	3,000	0	$947,250	−3.8%	0.62%
HASI	HA Sustainable Infrastructure Capital, Inc. Financial Services	Held	23,550	0	$919,627	+6.3%	0.60%
MTZ	Mastec Inc Industrials	Held	2,200	0	$915,332	+29.3%	0.60%
BWXT	BWX Technologies, Inc. Industrials	Held	4,700	0	$914,855	−4.8%	0.60%
MPWR	Monolithic Power Systems, Inc. Technology	Held	650	0	$898,534	+26.4%	0.59%
LFST	LifeStance Health Group, Inc. Healthcare	NEW	83,600	NEW	$895,356	NEW	0.59%
CLS	Celestica Inc Technology	Held	2,450	0	$893,760	+29.5%	0.59%
PFGC	Performance Food Group Co Consumer Defensive	Held	7,880	0	$880,905	+30.5%	0.58%
INSM	INSMED Inc Healthcare	Held	7,925	0	$844,963	−34.8%	0.55%
DNLI	Denali Therapeutics Inc. Healthcare	NEW	32,100	NEW	$825,612	NEW	0.54%
HWKN	Hawkins Inc Basic Materials	Held	5,750	0	$817,075	−7.5%	0.54%
CIEN	Ciena Corp Technology	Held	1,650	0	$809,424	+26.4%	0.53%
LPLA	LPL Financial Holdings Inc. Financial Services	Added	2,850	+750	$802,788	+27.1%	0.53%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.