Ken Griffin Proto Labs Inc Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Proto Labs Inc stock. As of the latest transaction made, Citadel Advisors LLC holds 55,212 shares of PRLB stock, worth $2.68 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

55,212

Previous 123,936 55.45%

Holding current value

$2.68 Million

Previous $4.96 Million 44.34%

% of portfolio

0.0%

Previous 0.0%

28 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$38.74 - $51.02 $2.66 Million - $3.51 Million	-68,724 Reduced 55.45%	55,212 $2.76 Million
Q2 2025 Aug 14, 2025	BUY	$31.12 - $41.64 $3.46 Million - $4.63 Million	111,301 Added 880.89%	123,936 $4.96 Million
Q1 2025 May 15, 2025	SELL	$35.04 - $45.03 $82,484 - $106,000	-2,354 Reduced 15.7%	12,635 $442,000
Q4 2024 Feb 14, 2025	SELL	$26.71 - $44.77 $388,149 - $650,597	-14,532 Reduced 49.23%	14,989 $585,000
Q3 2024 Nov 14, 2024	BUY	$27.59 - $34.97 $69,388 - $87,949	2,515 Added 9.31%	29,521 $867,000

Q2 2024 Aug 14, 2024	SELL	$29.95 - $34.81 $16,292 - $18,936	-544 Reduced 1.97%	27,006 $834,000
Q1 2024 May 15, 2024	SELL	$33.52 - $38.0 $342,205 - $387,942	-10,209 Reduced 27.04%	27,550 $984,000
Q4 2023 Feb 14, 2024	SELL	$23.28 - $40.2 $2.11 Million - $3.65 Million	-90,792 Reduced 70.63%	37,759 $1.47 Million
Q3 2023 Nov 14, 2023	BUY	$25.21 - $35.58 $758,846 - $1.07 Million	30,101 Added 30.57%	128,551 $3.39 Million
Q2 2023 Aug 14, 2023	BUY	$28.03 - $35.89 $1.66 Million - $2.12 Million	59,163 Added 150.59%	98,450 $3.44 Million
Q1 2023 May 15, 2023	SELL	$25.3 - $34.63 $577,472 - $790,429	-22,825 Reduced 36.75%	39,287 $1.3 Million
Q4 2022 Feb 14, 2023	SELL	$22.09 - $39.36 $866,701 - $1.54 Million	-39,235 Reduced 38.71%	62,112 $1.59 Million
Q3 2022 Nov 14, 2022	BUY	$35.39 - $51.97 $1.99 Million - $2.92 Million	56,091 Added 123.94%	101,347 $3.69 Million
Q2 2022 Aug 15, 2022	SELL	$40.26 - $54.7 $94,933 - $128,982	-2,358 Reduced 4.95%	45,256 $2.17 Million
Q1 2022 May 16, 2022	BUY	$46.58 - $59.4 $1.79 Million - $2.29 Million	38,484 Added 421.51%	47,614 $2.52 Million
Q4 2021 Feb 14, 2022	SELL	$48.63 - $77.16 $10.3 Million - $16.3 Million	-211,548 Reduced 95.86%	9,130 $468,000
Q3 2021 Nov 15, 2021	BUY	$66.6 - $92.67 $5.99 Million - $8.34 Million	89,952 Added 68.81%	220,678 $14.7 Million
Q2 2021 Aug 16, 2021	BUY	$84.87 - $120.13 $682,779 - $966,445	8,045 Added 6.56%	130,726 $12 Million
Q1 2021 May 17, 2021	BUY	$115.19 - $251.49 $13.9 Million - $30.3 Million	120,631 Added 5884.44%	122,681 $14.9 Million
Q4 2020 Feb 16, 2021	SELL	$117.51 - $188.37 $1.06 Million - $1.69 Million	-8,990 Reduced 81.43%	2,050 $315,000
Q3 2020 Nov 16, 2020	SELL	$107.54 - $164.27 $254,332 - $388,498	-2,365 Reduced 17.64%	11,040 $1.43 Million
Q2 2020 Aug 14, 2020	SELL	$67.88 - $134.89 $823,384 - $1.64 Million	-12,130 Reduced 47.5%	13,405 $1.51 Million
Q1 2020 May 15, 2020	BUY	$64.61 - $113.05 $1.49 Million - $2.61 Million	23,064 Added 933.39%	25,535 $1.94 Million
Q2 2019 Aug 14, 2019	SELL	$97.35 - $117.14 $735,089 - $884,524	-7,551 Reduced 75.34%	2,471 $287,000
Q1 2019 May 15, 2019	SELL	$100.92 - $130.06 $3.35 Million - $4.32 Million	-33,215 Reduced 76.82%	10,022 $0
Q4 2018 Feb 14, 2019	BUY	$102.02 - $157.99 $2.62 Million - $4.06 Million	25,671 Added 146.14%	43,237 $4.88 Million
Q3 2018 Nov 13, 2018	SELL	$119.15 - $165.0 $2.34 Million - $3.24 Million	-19,618 Reduced 52.76%	17,566 $0
Q2 2018 Aug 10, 2018	BUY	$113.0 - $136.35 $4.2 Million - $5.07 Million	37,184 New	37,184 $0

Others Institutions Holding PRLB

# of Institutions

223

Shares Held

22.3M

Call Options Held

42.2K

Put Options Held

7.8K

View Full List

About Proto Labs Inc

Ticker PRLB
Exchange NYSE
Sector Industrials
Industry Metal Fabrication
Shares Outstandng 27,503,100
Market Cap $1.33B
Description
Proto Labs, Inc., together with its subsidiaries, operates as an e-commerce driven digital manufacturer of custom prototypes and on-demand production parts in the worldwide. The company offers injection molding; computer numerical control machining; three-dimensional (3D) printing, which include stereolithography, selective laser sintering, dire...

More about PRLB

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